The question of “due process” raises, in my judgment, the question of the relationship between the legislature and the judiciary. In a federal constitution, it is always open to the judiciary to decide whether any particular law passed by the legislature is ultra vires or intra vires in reference to the powers of legislation which are granted by the Constitution to the particular legislature. If the law made by a particular legislature exceeds the authority of the power given to it by the Constitution, such law would be ultra vires and invalid. That is the normal thing that happens in all federal constitutions. Every law in a federal constitution, whether made by the Parliament at the Centre or made by the legislature of a State, is always subject to examination by the judiciary from the point of view of the authority of the legislature making the law. The ‘due process’ clause, in my judgment, would give the judiciary the power to question the law made by the legislature on another ground. That ground would be whether that law is in keeping with certain fundamental principles relating to the rights of the individual. In other words, the judiciary would be endowed with the authority to question the law not merely on the ground whether it was in excess of the authority of the legislature, but also on the ground whether the law was good law, apart from the question of the powers of the legislature making the law. The law may be perfectly good and valid so far as the authority of the legislature is concerned. But, it may not be a good law, that is to say, it violates certain fundamental principles; and the judiciary would have that additional power of declaring the law invalid. The question which arises in considering this matter is this. We have no doubt given the judiciary the power to examine the law made by different legislative bodies on the ground whether that law is in accordance with the powers given to it. The question now raised by the introduction of the phrase ‘due process’ is whether the judiciary should be given the additional power to question the laws made by the State on the ground that they violate certain fundamental principles.
