6.2 Presumption of Constitutionality of a Statute

The validity-first rule: every statute presumed constitutional — the challenge must prove the invalidity; the construction's duty: where two readings are open, the constitutional one chosen (the ut res canon's U5.1.2 face). The presumption's limits: the plain unconstitutionality cannot be saved by strained reading (the colourable exercise's U5.2.5 face). Nepal's practice: the constitutional- bench scrutiny's deference pattern (the fiscal-and-social statutes' survival readings; the-plain- breach declarations where the text fails).