suggested structure -

s 51xx: external affairs power

The Parliament shall, subject to this Constitution, have power to make laws for the peace, order, and good government of the Commonwealth with respect to:—

Foreign corporations, and trading or financial corporations formed within the limits of the Commonwealth

characterisation question - how must a law be formulated so it is one that is ‘with respect to trading or financial corporations’

Tasmanian Dams Case (1983)

Key excerpts from the judgment Mason J

the question then is whether the corporations power extends to the regulation of the activities of trading corporations, not being trading activities […] It has been affirmatively established that the power extends to the regulation and the protection of the trading activities of trading corporations.