If they cannot come to an agreement, let Obama make the decision. He is the top dog in Washington. He is very intelligent and that makes him better equipped to make the final call than any of us. I know, Constitution, congress, democratic way, etc. etc.
If you have team A and team B of children arguing who is up to bat next in the playground and they cannot agree, the coach will step in and make the decision for them. Same rule should apply here.
The American people elected Obama and now the GOP wants to tie his hands from doing the peoples work.