There are suddenly a whole bunch of people saying we should build a wall on the U.S. Mexican border.
Serious question: where, exactly, do people propose building this wall? Half of the border is the Rio Grande River. You can't build it on the Mexican side - that doesn't belong to us. If you build it on THIS side, you cut the people of Texas off from access to the river. You can't do that - it would destroy the State's economy. What are you going to do - put a wall in the middle of the river?