The border between the United States and Mexico is the busiest in the world. This series follows the work of America’s Customs and Border Protection agency whose job is to protect the border and stop terrorists, human traffickers, drugs and illegal weapons from entering the country. The fourth season will be the biggest, widest and most comprehensive look at the US/Mexico border ever undertaken.Saturdays and Sundays at 10:20, 17:25 and 21:20 from 13th May to 11th June.
