and also enable the boards to sell and market the commodities and to do all things necessary or expedient in that behalf.
Eggs have been declared a commodity under these Acts and egg pulp is deemed to be a commodity by force of the Act No. 4658.
A board known as the Egg and Egg Pulp Marketing Board has been constituted and appointed under the Acts. And on 13th May 1941 (VICT.),
the Governor in Council made certain regulations called the Egg and Egg Pulp Marketing Board Regulations 1941 pursuant to the powers contained in the Acts. The Acts and the Regulations and the acts done pursuant to the Regulations all appear, on their face, to be within the constitutional powers conferred upon the State of Victoria by its Constitution.
The Commonwealth Parliament has no authority to repeal laws passed by the States within the limits of their constitutional powers, though the Commonwealth Constitution Act and various of its provisions may render those laws inoperative wholly or in part: See Roughley v. New South Wales; Ex parte Beavis 1. And it has been argued, on various grounds, that the Constitution Act does
SO operate in respect of the Marketing of Primary Products Acts of Victoria and the Regulations made thereunder.
1. That the defence power of the Commonwealth is exclusive. The argument freely rendered is that the decisions of this Court
SO magnify the defence power that any measure that might conceiv- ably, even incidentally, aid the effectuation of the power of defence, is authorized by the Constitution, and the Court must hold its hand and leave the rest to the judgment, wisdom, and discretion of the Parliament and the Executive it controls, even to depriving the States of their executive departments of government: See South Australia v. The Commonwealth 2. Such a power, it is asserted, is in its nature exclusive, and that conclusion is reinforced by the provisions of secs. 52, 69, 114, and 119 of the Constitution.
The marketing of commodities such as wheat, meat, or eggs, &., might conceivably aid, it was said, the defence of the Commonwealth, and consequently the regulation thereof by legislation falls within the legislative, and the exclusive legislative, domain of the Common- wealth. The argument goes far toward the destruction of the federal system established by the Constitution Act, but perhaps not much farther than the recent decisions of this Court. The broad principle of this federal system is to be found, as regards the States, in the provision of the Constitution Act, that their powers are left unaffected except in SO far as the contrary is provided (James V. The Commonwealth 3 ).
1(1928) 42 C.L.R. 162, at p. 207.
2(1942) 65 C.L.R. 373.
3(1936) A.C. 578, at p. 611.