"We will repeal Joe Biden's dangerous Executive Order that hinders AI innovation and imposes radical left-wing ideas on the development of this technology," Trump stated in his campaign platform. "In its place, Republicans support AI development rooted in free speech and human flourishing."
Through an executive order, the Biden administration passed its existing AI regulations in October 2023 using a national defense act from 1950 as justification, meaning in the eyes of his opponents they were already on tenuous legal ground. That's not really relevant now, though, since all Trump has to do is pass a counter-order to negate it.