democrats don't want a wall. repubs in congress don't want a wall. rubio, kasich don't want a wall. cruz has gone back and forth on it.
Trump wants a wall BUT has said those who are here illegally but haven't broken any laws CAN STAY. He said that July 27, 2015. Look it up.
ALl it takes to beat a 30 foot wall is a 31-foot ladder, let's be honest. Bring a dump truck full of one side, stack up dirt, and just walk up to the wall. It's not hard to defeat a wall. heck, just dig a small tunnel under 10 feet of soil and walk through.
IMO, if you truly want to stop illegals from coming in, you invest that $10 billion for 'a wall' - which is really 100 billion after overruns on cost... put in drones, motion detectors, and a nice reward system (turn in an illegal, make $5k).