Why should the GOP pass anything? We all know that if the House passes a law prescribing the size of a thimble, the Senate could take it up, pass it and the 0bama regime could interpret this as universal US voting rights and welfare for anyone on the planet.
They won't. They're just going through this ridiculous kabuki dance to satisfy their corporate masters. If the Republicans really did push an amnesty bill through to a vote, they'd be decimated in the Fall. They all know this, but can't say no to the people they really work for.