I think Obama threw it to Congress to come up with a plan on purpose, with a long term expectation that he was going to end up vetoing the first one to come out just before the mid-terms whilst calling it "wholly inadequate" and naming names as to why.
It would make sense if part of what he's trying to do is to get rid of some Democrats... and some of them definitely need to be gotten rid of, and the only way for Obama to do that is to get the voters to get rid of them.