US President Donald Trump has clashed with Maine Governor Janet Mills, claiming 'we are the federal law' in response to non-compliance with his executive order on transgender athletes.

It has become clear that the Trump 2.0 administration is vastly different from the first.

Professor Aiden Warren from RMIT told Bill McDonald on 4BC Mornings, "I don't care where you are on any side of the politics, whether you're left, moderate or right. This is really a significant, real challenge to democracy."

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