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The Defence Power : The Defense Power

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THE DEFENCE POWER:

INTRODUCTION
Under s 51(vi) of the Constitution, the Cth can make laws with regard to ‘the naval and military defence of the Cth and of the several States, and the control of the forces to execute and maintain the laws of the Cth’. As s 51(vi) is interpreted to be a purpose power, the test for whether a certain law is within thus power is whether it is proportionate to achieving the stated defensive purpose . The test is ‘elastic’ as the scope of s 51(vi) depends on whether Australia is at war or peace. The outcome turns on judicially noticeable facts about the existence and character of hostilities or threats. In agreeing with Brian Galligan, it is clear that during times of war, the defence power waxes to an extent where it allows the Government to become unitary. Therefore, in order to survive, the Commonwealth must “do anything which can contribute to its defence” . However, as examined later on, there is some debate as to what extent the Commonwealth may be able to go to when implementing measures to protect itself.

The question of whether a certain law is to be authorised by s51(vi) is a question that must be determined by the courts. The separation of powers as set out in the Constitution means that neither the legislature nor the executive can pre-empt the judicial function by purporting to determine the constitutional question in advance. Evidence of the beliefs and intentions of the legislature or executive may help to answer the

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