This is an opportunity for the President to call Ryan's bluff. Instead of scoffing at Ryan's lame and lying excuse, the President should embrace it by stating that he would be happy to sign a comprehensive immigration reform bill, like the one passed by the Senate, but that did not become effective until, say, October of 2017 (the new fiscal year).
We have an immigration issue here today. People will risk their lives to get here to become part of the bigger, louder American Family. The problem isn't that these people are coming here -- the problem is we have part of our family who have forgotten what it was like to be Italian (or whatever group YOU come from).
When a Republican Member of Congress uses a term like "wetback," I generally write it off to the insensitivity of individuals of a certain age. But when almost every Republican votes to deport DREAMers and many other sensible Republicans propose the enforcement-only son-of-H.R 4437, I am genuinely offended.