Not valid. That’s what Alexander Hamilton called any federal act contrary to the Constitution. In Federalist paper #78, Hamilton wrote: “There is no position which depends on clearer principles, than that every act of a delegated authority contrary to the tenor of the commission under which it is exercised is void.” And from this Hamilton drew the only logical conclusion. the road “No legislative act, therefore, contrary to the Constitution, can be valid.” In a nutshell, Hamilton told us the federal government is not supreme. Whatever authority it has was delegated to it by a higher authority – the people of the several states. If the federal government exercises any power contrary to those delegated to it in the Constitution, the act is void. In other words – not valid or legally binding. That means any such unconstitutional acts should simply be ignored.