Donald Trump’s most consistent campaign promise — to build a wall on the United States’ southern border to keep immigrants out — will be a waste of time and money, the former head of the Customs and Border Protection agency told ABC News in a final warning just days before leaving office.
“I think that anyone who’s been familiar with the southwest border and the terrain…kind of recognizes that building a wall along the entire southwest border is probably not going to work,” Gil Kerlikowske, commissioner of CBP during the Obama Administration, said shortly before leaving office last Friday.
