Use of drones would be the perfect solution to the US border problems... Assuming that you think it is A PROBLEM...
Building a "wall" is an Ancient and Dark Ages "solution"... We have ways to build high tech "Walls" nowadaze...
Big Ag and Big Business and the Democrats don't see the border as a major issue...
Its only the local White Folks and Snowbirds from Arizona to Texas...now awash in the fast growing....New Hispanic Culture... that are complaining...
If the corporations want cheap Mexican labor...Red Neck Bubbas can complain...but nothing will be done...