This is true, at the very least the bridge act can pass. We've seen republicans and democrats come together to deliver trump a veto proof majority. The same might be true if he tries not signing bridge or dream act. Republicans know the damage of being blamed for ruining our lives. Same reason they wanted to vote for the healthcare bill if it would be amended in the house. They don't want to displease their base but at the same time they know the consequences of cruel legislation.