ProPublica published a very insightful interview with Alan Bersin. He “served in several key posts in the Department of Homeland Security, including as acting commissioner of Customs and Border Protection, the force of 58,000 employees that includes the U.S. Border Patrol as well as CBP officers guarding air, land and sea ports of entry. He later served as assistant secretary for international affairs and chief diplomatic officer at DHS, a job he left last month.”
The interview can be read HERE.