The question is "What will the Repubs go for at this point"? If they are willing to compromise on the legalization issue, there may be a chance for passage of something legitimate. But if they try and hold out for only enforcement, they will come up empty. The Blue-dogs will not take on the liberal leadership in either house.
We shall see how much clout the San Francisco Democrats wield. My guess is not much. They are not the Clintons.