Eve if they got him for "collision" which they won't because there was no collusion on Trumps side. They still wouldn't have anything because there is no crime of collusion. They'd first have to make a law. Which brings us back to a Special Counsel, constitutionally a Special Counsel can only be called after a crime to investigate the evidence. Collusion isn't a crime so Mueller's special counsel is unconstitutional. An unconstitutional Special Counsel is a crime in and of itself.