IMO, the chances of the GOP losing the Congress this fall are small.
"All politics is local".
In fact, the immigration issue seems to be driving Republican politicians to the right...at least when they're at home on the campaign trail. How they act in DC is another story...
My personal expectation is a slightly more conservative House when it is all said and done.
The Senate is a different equation entirely...but it will still be in Republican hands, I think.
I am not interested in losing the House or the Senate. I just want to get rid of the RINOS, and the pro illegal immigration sluts.