Perry took the perfect approach - Obama is either inept or he is causing it - take your pick. Perry does not have to prove anything (likely happened via calls to Mexico President and evidence may not be discoverable).
The key is to put the other side on defense
Bingo! The key to winning all political battles. Unfortunately Bonehead Boehner has no brain much less a strategy. If he had one—a brain—he would have a new attack line everyday, forcing the RATS to defend their position. But we are saddled with a feckless speaker, a political know nothing, waiting out the time to do no harm and hopefully regain the Senate. Reminds me of the feckless fool on the hill, but hey, what is a RHINO suppose to do?
in either case, 0bama should be removed from office
the only question is whether or not he ends up in jail