Thus, this landmark judgement meant that every provision of the Constitution could be amended but these amendments can be subjected to judicial review to ascertain that the basic structure of the Constitution remains intact.
Components of Basic structure
Over the years, the 'basic structure' of the Constitution has been defined to include, features like the supremacy of the Constitution, rule of law, independent judiciary, federalism, sovereign democratic republic, welfare state, parliamentary system of government, and principle of free and fair elections, and so on.
The Indira Gandhi government, in 1976 enacted the 42nd Amendment Act that declared that there is no limitation to the constituent power of Parliament under article 368. The amendment, which was also called the "mini-constitution" for introducing wide-ranging changes to the constitution barred the courts from questioning constitutional amendments.