GB, you need the majority of both the House and the Senate, a majority meaning 2/3 of them combined. Most of the House is made of Democrats, and the Senate has more Republicans. What people don't realize also, is that it is Congress who has the power to the money issued in anything. So they have the last word on the wall.
Only 6 Republicans sided with the president in voting that the wall should be an emergency. Maybe the rest will see when the time comes, that he isn't fit to be president. Compared to what he has done, and that hasn't come out to the public yet, what Clinton did was nothing, and yet they impeached him.