(A) Constitution of India , Art.245, Art.14— Law - Constitutional validity - Court's approach - Constitutionality of law is to be presumed - And clear transgression of constitutional principles must be shown - For challenge on ground of Art. 14 - Classification made must be shown to be impermissible - Or conferment of uncanalised powers on executive must be shown. Where there is challenge to the constitutional validity of a law enacted by the legislature, the Court must keep in view that there is always presumption of constitutionality of an enactment, and a clear transgression of constitutional principles must be shown. The fundamental nature and importance of the legislative process needs to be recognised by the Court and due regard and defence must be accorded to the legislative process. Where the legislation is sought to be challenged as being unconstitutional and violative of Art. 14 of the Constitution, the Court must remind itself to the principles relating to the applicability of Art. 14 in relation to invalidation of legislation. The two dimensions of Art. 14 in its application to legislation and rendering legislation invalid are now well recognised and these are (i) discrimination, based on an impermissible or invalid classification, and (ii) excessive delegation of powers; conferment of uncanalised and unguided powers on the executive, whether in ....