Rand’s gonna have to decide if he wants to keep that Senate seat or abandon it for a difficult Presidential run, because he won’t be able to do both.
Rand and his Paulistinian lawyers are prepared to sue KY in federal court, claiming that it is unconstitutional to place restrictions on running for president or running for the Senate above and beyond the requirements in the Constitution. It’s not a bad argument, really, and he can cite Powell v. McCormack and the U.S. Term Limits case as precedents; of course, his Paulistinian lawyers probably don’t recognize the jurisdiction of the U.S. Supreme Court and make an argument based on the Articles of Confederation or something.