U.S. Customs and Border Protection Air and Marine agents patrol along the Rio Grande on the Texas-Mexico border near Rio Grande City, Texas.
U.S. Customs and Border Protection Air and Marine agents patrol along the Rio Grande on the Texas-Mexico border near Rio Grande City, Texas. Eric Gay The Associated Press file photo
U.S. Customs and Border Protection Air and Marine agents patrol along the Rio Grande on the Texas-Mexico border near Rio Grande City, Texas. Eric Gay The Associated Press file photo

8 border security secrets officials don't want to reveal

January 02, 2017 07:24 AM