Salient Features & The Preamble

The Indian Constitution is renowned for its unique 'amphibian' nature—it is federal in normal times but unitary during emergencies (a feature KC Wheare termed 'quasi-federal'). A critical core feature is the synthesis of Parliamentary Sovereignty (British principle) and Judicial Supremacy (American principle). The Supreme Court can strike down laws via judicial review, while Parliament can amend major portions of the Constitution. This delicate balance is governed by the 'Basic Structure Doctrine' (established in the Kesavananda Bharati case, 1973). The Preamble embodies the philosophy and fundamental values (political, moral, and religious) on which the Constitution is based. It is not an afterthought but the 'horoscope of our sovereign democratic republic' (K.M. Munshi). For UPSC, the analytical tension lies in whether the Preamble is enforceable. While the Berubari Union case (1960) ruled it was not a part of the Constitution, the landmark Kesavananda Bharati case corrected this, stating it is indeed a part and can be amended, provided the 'basic structure' is not destroyed. The Preamble serves as a guiding light for constitutional interpretation when linguistic ambiguity arises in specific Articles.