Only the Speaker, are you serious? The Speaker is the closest thing to a king we have in our politics. Nothing happens in our system unless the Speaker wants it too. And most things he wants are done. He can'r overrule the President but he can sure bind him up and he did exactly that to Trump. Did he allow the wall to go forward, immigration reform, ObamaCare?
Obamacare minimally went forward.....without Trump’s promised replacement portion of it. The wall was Senate Democrats, who Trump said he could work with. But failed to.