Congress is in charge of appropriations. Trump and his administration have yet to learn that. For Trump to unilaterally reassign monies to projects he prefers to see funded is a violation of his oath of office and of the Constitution, not that he and the Republicans care about any of that. The wall is a massive waste of time, money, and energy. What good is it when you can climb over it in minutes and cut holes in it with a reciprocating saw bought at your local hardware store?