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Basic Structure vs Parliamentary Sovereignty

UPSC Civil Services• POLITY• Basic Structure Doctrine• Basic Structure vs Parliamentary Sovereignty
Explains the difference between Basic Structure and Parliamentary Sovereignty, covering India's constitutional supremacy, parliamentary form of government, Article 368, Basic Structure Doctrine, Judicial Review, Fundamental Rights, federalism, separation of powers, the UK comparison, important Supreme Court judgments, UPSC Prelims traps and Mains answer framework.

Basic Structure vs Parliamentary Sovereignty

Introduction

The relationship between the:

Basic Structure Doctrine

and:

Parliamentary Sovereignty

is a central issue in understanding the nature of the Indian Constitution.

The Indian constitutional system does not recognise:

Absolute Parliamentary Sovereignty

in the traditional British sense.

Instead, India follows:

Constitutional Supremacy

Parliament has extensive legislative and constitutional amendment powers.

However, these powers are subject to:

  • The Constitution
  • Judicial Review
  • Fundamental Rights
  • Basic Structure
  • Separation of Powers
  • Federalism

Core Formula

British Model → Parliamentary Sovereignty

Indian Model → Constitutional Supremacy

Parliament → Powerful but Constitutionally Limited

Basic Structure → Ultimate Limitation on Amending Power


1. Meaning of Parliamentary Sovereignty

Parliamentary Sovereignty refers to the principle that:

Parliament Is the Supreme Law-Making Authority

In its classical form, associated with the British constitutional system, Parliament has very broad authority to:

  • Make laws
  • Change laws
  • Repeal laws
  • Alter constitutional arrangements

Under the traditional Westminster conception:

No Parliament Can Bind a Future Parliament

and:

Courts Cannot Strike Down an Act of Parliament Merely Because It Is Unconstitutional


2. Parliamentary Sovereignty in the United Kingdom

The classical model is associated with:

United Kingdom

The UK has:

Parliamentary Sovereignty

rather than a single codified Constitution that operates in the same way as India's written Constitution.

The British Parliament is generally regarded as the:

Supreme Legislative Authority

Memory

UK → Parliamentary Sovereignty


3. Constitutional Supremacy in India

India follows:

Constitutional Supremacy

The Constitution is the:

Supreme Law of the Land

All organs of government derive their authority from the Constitution.

This includes:

  • Parliament
  • Executive
  • Judiciary
  • State Legislatures

Core Principle

Parliament Is Created by the Constitution

Therefore:

Parliament Is Not Above the Constitution


4. Why India Does Not Follow Absolute Parliamentary Sovereignty

The Indian Constitution establishes:

Written Constitutional Limits

Parliament must operate within:

  • Fundamental Rights
  • Constitutional procedures
  • Federal distribution of powers
  • Judicial Review
  • Basic Structure

Therefore:

Majority in Parliament ≠ Unlimited Constitutional Power


5. Parliament's Legislative Power

Parliament has extensive power to make ordinary laws.

However, ordinary laws can be challenged before:

Constitutional Courts

if they violate:

  • Fundamental Rights
  • Distribution of legislative powers
  • Other constitutional provisions

Memory

Parliament Makes Laws

Constitution Determines Their Validity


6. Parliament's Constitutional Amendment Power

Under:

Article 368

Parliament has the power to amend the Constitution.

This power is broader than ordinary legislative power.

However, it is not:

Unlimited

The limitation is:

Basic Structure Doctrine

Formula

Article 368 → Amendment Power

Basic Structure → Limitation


7. Basic Structure Doctrine

The Basic Structure Doctrine was established in:

Kesavananda Bharati v. State of Kerala, 1973

The Supreme Court held:

Parliament Can Amend the Constitution

but:

Parliament Cannot Destroy Its Basic Structure

This is the central constitutional difference between:

Parliamentary Power

and:

Parliamentary Sovereignty


8. Parliamentary Power vs Parliamentary Sovereignty

These concepts should not be confused.

Parliamentary Power

Parliament has:

Wide Constitutional Authority

to make laws and amend the Constitution.

Parliamentary Sovereignty

Parliament would have:

Ultimate and Unlimited Constitutional Authority

India does not follow the second model.

UPSC Memory

Parliamentary Power → Yes

Absolute Parliamentary Sovereignty → No


9. Basic Structure as a Limitation

The Basic Structure Doctrine places a:

Substantive Limitation

on Parliament's constitutional amendment power.

Parliament can change constitutional provisions.

But it cannot fundamentally destroy:

  • Democracy
  • Rule of Law
  • Judicial Review
  • Federalism
  • Secularism
  • Separation of Powers
  • Judicial Independence
  • Republicanism
  • Free and Fair Elections
  • Limited Amending Power

Important

The list is:

Not Exhaustive


10. Constitutional Supremacy vs Parliamentary Sovereignty

Constitutional Supremacy

Constitution Is Supreme

Parliament:

Derives Power from Constitution

Courts:

Interpret and Enforce Constitution

Parliamentary Sovereignty

Parliament Is Supreme

Courts:

Cannot override Parliament's constitutional choices in the same manner

India

Constitutional Supremacy


11. Role of Article 13

Article 13 provides constitutional protection against laws inconsistent with:

Fundamental Rights

It strengthens:

Constitutional Supremacy

Ordinary legislation cannot override:

Fundamental Rights

Memory

Article 13 → Constitutional Supremacy + Judicial Review


12. Role of Article 32

Article 32 provides the:

Right to Constitutional Remedies

Citizens can approach the:

Supreme Court

for enforcement of Fundamental Rights.

This demonstrates that Parliament is not the final authority on constitutional validity.

Memory

Article 32 → Constitutional Remedies


13. Role of Article 226

High Courts exercise broad writ jurisdiction under:

Article 226

They can review:

  • Legislative action
  • Executive action
  • Constitutional violations

Therefore constitutional review is not limited to:

Supreme Court


14. Judicial Review

Judicial Review allows courts to examine whether:

Legislative + Executive + Constitutional Actions

comply with the Constitution.

Judicial Review is recognised as part of the:

Basic Structure

Core Principle

Parliament → Not Final Judge of Constitutionality


15. Basic Structure and Judicial Review

If Parliament could completely remove:

Judicial Review

it could theoretically make constitutional amendments:

Unchallengeable

This would weaken:

Constitutional Supremacy

Therefore:

Judicial Review → Basic Structure


16. Kesavananda Bharati and Parliamentary Sovereignty

The:

Kesavananda Bharati Case, 1973

is the most important judgment establishing the constitutional limitation on Parliament.

The Court held:

Parliament's Amending Power Is Not Unlimited

This effectively rejected the idea of:

Absolute Parliamentary Sovereignty

within the Indian constitutional framework.

Memory

Kesavananda → Parliament Powerful, Not Supreme


17. Minerva Mills and Parliamentary Sovereignty

In:

Minerva Mills v. Union of India, 1980

the Supreme Court held that:

Limited Amending Power

is itself part of the:

Basic Structure

The Court rejected the attempt to make Parliament's amending power:

Unlimited

Core Principle

Parliament Cannot Use Article 368 to Make Article 368 Unlimited


18. Article 368(4) and Parliamentary Sovereignty

The 42nd Amendment inserted:

Article 368(4)

which attempted to prevent courts from questioning constitutional amendments.

This was struck down in:

Minerva Mills

because it undermined:

Judicial Review

and:

Basic Structure


19. Article 368(5) and Parliamentary Sovereignty

The 42nd Amendment inserted:

Article 368(5)

which attempted to declare that there would be:

No Limitation Whatever

on Parliament's amending power.

The Supreme Court struck this down.

Memory

Article 368(5) → Unlimited Power Attempt → Struck Down


20. Parliament Cannot Be the Judge of Its Own Power

A core constitutional principle emerging from:

Minerva Mills

is that Parliament cannot have the final and unlimited authority to determine:

The Extent of Its Own Constitutional Power

Judicial Review provides an external constitutional check.

Formula

Parliament → Exercises Power

Constitution → Defines Power

Judiciary → Reviews Constitutional Limits


21. Separation of Powers

India follows:

Separation of Powers

in a constitutional sense.

The:

Legislature

makes laws.

The:

Executive

implements laws.

The:

Judiciary

interprets the Constitution and reviews constitutional validity.

No institution can completely eliminate the constitutional role of another.

Memory

Separation of Powers → Check on Concentration of Power


22. Rule of Law

Rule of Law means:

Government Power Must Operate Within Law

Parliament is also subject to:

The Constitution

Therefore:

Parliamentary Majority ≠ Unlimited Power

Core Principle

No Organ of Government Is Above the Constitution


23. Fundamental Rights as a Limitation

Fundamental Rights impose constitutional limits on:

Parliamentary Legislation

Parliament cannot enact ordinary laws that violate Fundamental Rights.

Constitutional amendments can modify Fundamental Rights, but cannot destroy:

Basic Structure

Important

Fundamental Rights → Strong Constitutional Limitation


24. Federalism as a Limitation

India is a:

Federal Constitution with a Strong Centre

The Constitution distributes powers between:

  • Union
  • States

Federalism has been recognised as part of the:

Basic Structure

Therefore Parliament cannot use its amendment power to completely destroy:

Federalism


25. Secularism as a Limitation

Secularism is recognised as an important:

Basic Structure Feature

Parliament cannot use Article 368 to fundamentally transform the Constitution into a:

Theocratic Constitutional Order

Important Case

S.R. Bommai v. Union of India, 1994

Memory

Secularism → Basic Structure


26. Democracy as a Limitation

Democracy is central to the:

Constitutional Structure

Parliament cannot use its amendment power to permanently abolish:

Democratic Government

Important

Free and Fair Elections

have also been recognised as part of the constitutional structure.

Case

Indira Gandhi v. Raj Narain, 1975


27. Republicanism as a Limitation

India is a:

Republic

The constitutional system does not provide for:

Hereditary Political Rule

The republican character of the Constitution is recognised within the Basic Structure framework.


28. Judicial Independence as a Limitation

An independent Judiciary is essential for:

Judicial Review

If Parliament could completely control or eliminate judicial independence, constitutional limitations would become ineffective.

Therefore:

Judicial Independence → Basic Structure


29. Constitutional Amendment vs Ordinary Law

The distinction is important.

Ordinary Law

Passed by Parliament through:

Ordinary Legislative Procedure

Subject to:

Constitutional Review

Constitutional Amendment

Passed through:

Article 368 Procedure

Subject to:

Basic Structure Review

Memory

Ordinary Law → Constitutionality Review

Amendment → Basic Structure Review


30. Parliamentary Majority vs Constitutional Limitation

A government may have:

Large Majority in Parliament

But this does not mean it can:

Destroy the Basic Structure

Core Principle

Political Majority ≠ Constitutional Sovereignty


31. Temporary Majority vs Permanent Constitution

Parliamentary majorities can change after:

Elections

The Constitution provides:

Long-Term Constitutional Stability

The Basic Structure Doctrine prevents a:

Temporary Political Majority

from permanently destroying:

Constitutional Democracy

Mains Point

Constitutionalism protects future generations from present majoritarian excesses.


32. Popular Sovereignty vs Parliamentary Sovereignty

India's constitutional authority ultimately derives from:

We, the People of India

The Constitution is adopted in the name of:

The People

Parliament is therefore:

A Constitutional Institution

rather than:

The Sovereign Source of the Constitution

Core Principle

People → Constitution → Parliament

not:

Parliament → Constitution


33. Constituent Power vs Amending Power

This distinction is important.

Constituent Power

The authority to:

Create a Constitution

Amending Power

The authority to:

Change an Existing Constitution

Parliament exercises:

Amending Power

under Article 368.

It cannot claim unlimited:

Original Constituent Power

Memory

Constituent Power → Constitution-Making

Amending Power → Constitutional Change


34. Can Parliament Destroy the Constitution?

No.

Parliament can:

Amend

but cannot:

Destroy the Basic Structure

This is the central principle of:

Kesavananda Bharati


35. Can Parliament Amend the Basic Structure?

This question requires careful wording.

Parliament may amend provisions that relate to features forming part of the Basic Structure.

However, the amendment cannot:

Damage or Destroy the Basic Structure

Example

Parliament may modify:

Judicial Institutions

but cannot eliminate:

Judicial Review

or:

Judicial Independence

in a manner that destroys the Basic Structure.


36. Can Parliament Amend Article 368?

Yes.

Article 368 itself can be amended.

However, Parliament cannot amend it in a way that:

Removes the Basic Structure Limitation

Memory

Article 368 → Amendable

Unlimited Article 368 → Not Permitted


37. Can Parliament Remove Judicial Review?

No, not in a manner that destroys:

Basic Structure

Judicial Review is an essential constitutional safeguard.

This was strongly reaffirmed in:

Minerva Mills


38. Can Parliament Remove Fundamental Rights?

Parliament may amend Fundamental Rights.

However, it cannot use Article 368 to:

Destroy the Basic Structure

The constitutional validity of such an amendment depends on its:

Impact on Basic Structure


39. Can Parliament Abolish State Governments?

Parliament cannot use constitutional amendment power to fundamentally destroy:

Federalism

because federalism forms part of the:

Basic Structure


40. Can Parliament Abolish Elections?

An amendment that fundamentally destroys:

Free and Fair Elections

and:

Democratic Government

could violate:

Basic Structure

Memory

Democracy → Protected

Electoral Democracy → Protected


41. Can Parliament Abolish the Supreme Court?

Parliament cannot use Article 368 to destroy:

Judicial Review

or:

Judicial Independence

because these are fundamental to:

Basic Structure

The constitutional institution may evolve, but its essential constitutional role cannot be destroyed.


42. Parliamentary Sovereignty in the Indian Context

It is more accurate to say:

India Has Parliamentary Government

rather than:

Absolute Parliamentary Sovereignty

India has:

Parliamentary System

but operates under:

Constitutional Supremacy

UPSC Trap

India follows the British doctrine of absolute parliamentary sovereignty.

False.


43. Parliamentary Government vs Parliamentary Sovereignty

These are different concepts.

Parliamentary Government

A system in which:

  • Executive is responsible to Legislature
  • Prime Minister leads government
  • Council of Ministers is collectively responsible

India follows:

Parliamentary Government

Parliamentary Sovereignty

Parliament has:

Ultimate Unlimited Law-Making Authority

India does not follow:

Absolute Parliamentary Sovereignty


44. British vs Indian Model

FeatureUnited KingdomIndia
Constitutional SystemParliamentaryParliamentary
Written ConstitutionNo single codified constitutionWritten Constitution
Supreme AuthorityParliamentConstitution
Judicial Review of Acts of ParliamentTraditionally limitedStrong constitutional review
Parliamentary SovereigntyCore principleNot absolute
Constitutional SupremacyNo equivalent in Indian senseCore principle
Basic Structure DoctrineNot applicable in same formApplicable

Memory

India Borrowed Parliamentary Government

but:

India Did Not Borrow Absolute Parliamentary Sovereignty


45. Basic Structure vs Parliamentary Sovereignty

Basic Structure Doctrine

Says:

Parliament's Constitutional Amendment Power Is Limited

Parliamentary Sovereignty

Says:

Parliament Is the Supreme Law-Making Authority

Indian Position

India follows:

Constitutional Supremacy + Parliamentary Government

rather than:

Absolute Parliamentary Sovereignty


46. Role of the Supreme Court

The Supreme Court acts as:

Guardian of the Constitution

It ensures that:

  • Parliament follows constitutional limits
  • Fundamental Rights are protected
  • Basic Structure is preserved
  • Judicial Review remains effective

Important

The Supreme Court does not replace Parliament as the:

Primary Law-Making Institution

It checks:

Constitutional Validity


47. Is the Judiciary More Powerful Than Parliament?

Not in a general sense.

Parliament has broad:

Legislative + Constitutional Amendment Powers

The Judiciary exercises:

Constitutional Review

The system is based on:

Checks and Balances

Core Principle

Parliament → Democratic Legitimacy

Judiciary → Constitutional Legitimacy

Constitution → Supreme Authority


48. Criticism of Basic Structure Doctrine

Critics argue that the doctrine:

  • Is not expressly mentioned in the Constitution.
  • Gives judges significant power.
  • May limit Parliament's democratic mandate.
  • Creates uncertainty because Basic Structure has no exhaustive list.
  • Can result in judicial overreach.

Criticism Formula

Judicially Created + Undefined + Potentially Broad


49. Arguments Supporting Basic Structure

Supporters argue that it:

  • Protects constitutional democracy
  • Prevents authoritarian constitutional amendments
  • Protects Fundamental Rights
  • Preserves Judicial Review
  • Protects federalism
  • Prevents temporary majorities from destroying permanent constitutional values
  • Maintains constitutional supremacy

Support Formula

Democracy + Rights + Constitutional Stability


50. Basic Structure as Constitutional Safety Valve

The doctrine acts as a:

Constitutional Safety Valve

It permits:

Constitutional Change

while preventing:

Constitutional Destruction

Formula

Change + Continuity

Flexibility + Rigidity

Majority Rule + Constitutional Limits


51. Parliament's Democratic Legitimacy

Parliament represents:

Electoral Mandate

Therefore Parliament must have sufficient authority to:

  • Make laws
  • Reform institutions
  • Respond to social change
  • Amend constitutional provisions

The Basic Structure Doctrine does not eliminate this power.

It establishes:

A Constitutional Boundary


52. Judiciary's Constitutional Legitimacy

The Judiciary derives its authority from:

The Constitution

Its role is to ensure that:

Constitutional Limits Are Respected

The Judiciary therefore acts as:

Guardian of Constitutional Supremacy


53. Constitutional Balance

The Indian model attempts to balance:

Parliamentary Democracy

with:

Constitutional Democracy

Parliamentary Democracy

Majority governs.

Constitutional Democracy

Majority governs:

Within Constitutional Limits

Core Principle

Majority Rule + Constitutionalism


54. Basic Structure and Constitutional Morality

Constitutional morality requires institutions to respect:

  • Constitutional values
  • Institutional boundaries
  • Fundamental Rights
  • Rule of Law
  • Democratic principles

Basic Structure supports:

Constitutional Morality

by preventing the misuse of formal amendment power.


55. Basic Structure and Constitutional Identity

The Constitution can change with society.

However, certain foundational features define its:

Constitutional Identity

Basic Structure protects this identity.

Formula

Constitutional Amendment → Evolution

Basic Structure → Identity


56. Important Supreme Court Judgments

Shankari Prasad v. Union of India, 1951

Parliamentary Amendment Power Upheld

Sajjan Singh v. State of Rajasthan, 1965

Amending Power Reaffirmed

Golaknath v. State of Punjab, 1967

Parliament Could Not Amend Fundamental Rights

Kesavananda Bharati v. State of Kerala, 1973

Basic Structure Doctrine

Indira Gandhi v. Raj Narain, 1975

Free and Fair Elections

Minerva Mills v. Union of India, 1980

Limited Amending Power + Judicial Review

Waman Rao v. Union of India, 1981

Ninth Schedule + 24 April 1973 Cut-Off

S.R. Bommai v. Union of India, 1994

Federalism + Secularism

I.R. Coelho v. State of Tamil Nadu, 2007

Ninth Schedule + Basic Structure Review


57. UPSC Prelims Facts

India → Constitutional Supremacy

India → Parliamentary Form of Government

India → Not Absolute Parliamentary Sovereignty

Article 368 → Constitutional Amendment

Kesavananda Bharati → Basic Structure

Minerva Mills → Limited Amending Power

Judicial Review → Basic Structure

Federalism → Basic Structure

Secularism → Basic Structure

Democracy → Basic Structure

Free and Fair Elections → Basic Structure

Rule of Law → Basic Structure

Separation of Powers → Basic Structure

Judicial Independence → Basic Structure


58. UPSC Prelims Traps

Trap 1

India follows absolute parliamentary sovereignty like the United Kingdom.

False

India follows:

Constitutional Supremacy


Trap 2

Parliament is above the Constitution.

False

Parliament derives its authority from:

The Constitution


Trap 3

Basic Structure means Parliament cannot amend the Constitution.

False

Parliament can amend the Constitution.

It cannot:

Destroy Basic Structure


Trap 4

The Basic Structure Doctrine eliminates parliamentary democracy.

False

It preserves:

Constitutional Democracy

while allowing Parliament to exercise legitimate powers.


Trap 5

Judicial Review means courts can reject any parliamentary policy they dislike.

False

Judicial Review concerns:

Constitutional Validity

not ordinary political disagreement.


Trap 6

Parliament cannot amend Article 368.

False

Article 368 can be amended, subject to:

Basic Structure


Trap 7

Parliament can amend Article 368 to remove all limits on its amending power.

False

Limited Amending Power is itself part of the Basic Structure.


Trap 8

Parliamentary government and parliamentary sovereignty are identical.

False

India has:

Parliamentary Government

but not:

Absolute Parliamentary Sovereignty


Trap 9

The Judiciary is the supreme law-making authority in India.

False

Parliament is the primary legislative institution.

The Judiciary exercises:

Constitutional Review


Trap 10

Basic Structure is expressly listed in Article 368.

False

It is a:

Judicially evolved constitutional doctrine


59. Important Comparison

AspectParliamentary SovereigntyBasic Structure / Indian Constitutionalism
Supreme AuthorityParliamentConstitution
Amendment PowerBroad/Unlimited in classical modelBroad but Limited
Judicial ReviewLimited in classical UK modelStrong
Fundamental RightsNot constitutionally supreme in same senseConstitutionally protected
Parliament Above ConstitutionYes in classical modelNo
Basic Structure LimitationNo equivalentYes
Constitutional SupremacyNoYes
IndiaNot applicable as absolute principleApplicable

60. Mains Answer Framework

For:

"Does the Basic Structure Doctrine undermine parliamentary sovereignty in India? Discuss."

Use:

Introduction

Explain that India follows:

Constitutional Supremacy

while retaining:

Parliamentary Government

rather than absolute parliamentary sovereignty.

Body

Parliamentary Power

  • Legislative authority
  • Constitutional amendment power
  • Democratic legitimacy
  • Article 368

Basic Structure Limitation

  • Kesavananda Bharati
  • Parliament can amend
  • Cannot destroy Basic Structure

Judicial Review

  • Constitutional supremacy
  • Fundamental Rights
  • Judicial Review
  • Minerva Mills

Key Tension

Parliamentary Majority vs Constitutional Limits

Arguments Against Doctrine

  • Judicial overreach
  • Not expressly mentioned
  • Uncertainty
  • Limits democratic mandate

Arguments For Doctrine

  • Protects democracy
  • Prevents authoritarianism
  • Protects rights
  • Preserves constitutional identity

Conclusion

The doctrine does not destroy Parliament's democratic role.

It ensures that:

Majority Rule Operates Within Constitutional Boundaries.


61. Ready-Made Mains Introduction

"India combines parliamentary government with constitutional supremacy. Unlike the classical British doctrine of parliamentary sovereignty, the Indian Parliament derives its authority from a written Constitution and remains subject to constitutional limitations. The Basic Structure Doctrine, established in Kesavananda Bharati, ensures that Parliament's power to amend the Constitution cannot be used to destroy its essential features."


62. Ready-Made Mains Conclusion

"The Basic Structure Doctrine should therefore not be viewed as an attempt to make the Judiciary superior to Parliament. Rather, it preserves constitutional supremacy by ensuring that democratic majorities exercise power within constitutional boundaries. The Indian model consequently seeks to reconcile parliamentary democracy with constitutional democracy, balancing change with continuity."


63. One-Minute Revision

UK

Parliamentary Sovereignty

India

Constitutional Supremacy

India Also Has

Parliamentary Form of Government

Parliament

Powerful but Constitutionally Limited

Article 368

Amending Power

Kesavananda Bharati

Basic Structure

Minerva Mills

Limited Amending Power

Judicial Review

Basic Structure

Democracy

Basic Structure

Federalism

Basic Structure

Secularism

Basic Structure

Rule of Law

Basic Structure

Core Principle

Parliament → Powerful

Constitution → Supreme

Basic Structure → Limit


64. Final Master Formula

British Model

↓

Parliamentary Sovereignty

↓

Parliament → Supreme

Indian Model

Constitution

↓

Constitutional Supremacy

↓

Parliament

↓

Article 368

↓

Amending Power

↓

Basic Structure Doctrine

↓

Judicial Review

↓

Constitutional Limits

Final Principle

India has a parliamentary system, but it does not follow absolute parliamentary sovereignty.

Parliament has extensive legislative and constitutional amendment powers, but those powers originate from and remain subject to the Constitution.

The Basic Structure Doctrine, established in Kesavananda Bharati, prevents Parliament from using Article 368 to destroy the Constitution's essential features.

Minerva Mills further established that the limited nature of Parliament's amending power is itself part of the Basic Structure.

Thus, the Indian constitutional model balances:

Parliamentary Democracy + Constitutional Supremacy

Majority Rule + Constitutional Limits

Constitutional Change + Constitutional Continuity

Parliamentary Power + Judicial Review

The central UPSC principle is:

India has Parliamentary Government, not Absolute Parliamentary Sovereignty.

Parliament can amend the Constitution, but it cannot destroy its Basic Structure.