The sun was setting on a beautiful Sunday evening in Mission, Texas, and I was standing at the base of the U.S.-Mexico border wall.

Eric Clapton’s “Wonderful Tonight” played in the background at Cabrera’s Bar, a quaint, small cantina less than 20 yards away. Looking out into the field of grass, rock, and dirt on the other side of the wall, I spotted a group of about 20 illegal immigrants, about 120 yards away, emerging from a field of trees. They walked down a dirt path toward an opening in the wall when a Border Patrol agent drove up to them.