Rand Paul being Rand Paul. That is to say, erratic.
If this needs a presidential veto (and subsequent failure of the Congress to override that veto) to move forward, well... just get on with it.
Let's get the Congressional "approval/disapproval" votes out-of-the-way.
They were never going to be anything more than "for show", in any case.
Then, start clearing out any opposition in the courts, with a "fast-track push" to the U.S. Supreme Court.
And in the meantime -- GET THAT WALL A-BUILDIN' !!