Trump's own party doesn't even back a wall.
He's had two years to get them on board. He has failed to do that.
Maybe you should realize that it was always a bad idea that would never have had popular suport in Congress. It was a dumb idea.
Obama's own hand-picked Chief of the Border patrol just came forward to declare the President is right, that 'walls absolutely work', there is no legitimate reason NOT to build the wall, and that 'all the experts agree'.
Pelosi, Schumer, and snowflakes, however, refuse to listen to US Intel agencies, the FBI, Homeland security, Border Patrol Agents, and even Obama's own hand-picked Chief of the Border Patrol...because they know better than everyone else.