First, you have to understand that no one in Washington is actually serous about ending illegal immigration or solving any border problems we might have. The goal is to make the other guy look as bad as possible.
So, the Republican majority house decided to pass a bill that they knew would never see the light of day but would serve to lend credence to the absurd notion that Republicans were all for a solution, but Democrats were simply holding out for amnesty and open borders. Obama took the bait and stated that this bill, which was never a serious attempt to do anything but make the president look bad, wouldn't be approved. Score one for the Republicans.
Meantime, the Democrat led Senate just said, "To heck with this (bleep!) and went home, letting the Republicans have their little victory, and knowing that they would be back after the election to fling more crap back at the Republicans.
Obama wants to focus attention on the fact that the Congress is dysfunctional and run by hyper partisan idiots, so he is threatening to "go it alone", which is, of course, unconstitutional. There is little he can do to "go it alone", and any attempt at doing so will bring charges from the Republicans that he is a dictator bent on taking power, probably planning to run again in '16 and counting on the vote of the illegal aliens, which of course, is absurd.
But then, the whole thing is absurd.
Meanwhile, we're assured by no less that former presidential candidate Michelle Bachann, not to be confused with that other Michelle who is only concerned with indoctrinating children to the idea that eating junk food is a bad idea, that the illegals are about to become subjects of medical experimentation. That is, of course, just as absurd as all of the rest of it, but it plays well with the lunatic fringe.
So, Washington is now vacant, all of the flingers of crap now having gone back to their gerrymandered districts to sing songs of silliness to the voters there and attempt to get back to Washington once again to do nothing.