The history of Australian federalism is one of the steady accretion of power to the central institutions of government, in particular the Commonwealth Parliament. The continuing shift from the States to the Commonwealth of effective power to regulate so many aspects of Australia’s economic and social life has, in general, been accepted and encouraged by the justices of the High Court – at least since the critical Engineers’ decision.
This acceptance and encouragement has been most conspicuous on those occasions when the High Court has endorsed the Commonwealth’s adventurous exploration of its legislative powers; when, for example, the Court decided that the defence and taxation powers would allow the Commonwealth to assume an effective monopoly over income taxation, that the overseas trade and commerce power would allow the Commonwealth to discourage sand mining in Queensland, or that the external affairs power would allow the Commonwealth to proscribe acts of racial discrimination inside Australia.