So you are going to enact a law that forbids other countries to choose and lobby for a favored candidate ? As I hear regularly "Good luck with that", and the only reason why you are able to claim any legitimacy with this is because it is alleged that the Russians "Hacked" the election, but no clear definition has ever been given as to what that means. Why shouldn't a foreign government attempt to influence an election, have any of you offered a reason (besides it being 
"un-American)" How about if Putin calls the people he knows here and asks them to vote for Trump, is that a "prosecutable" offense ?  Your arguments are weak, vague and unsubstantiated, which meets the definition of a "Witch Hunt".