A new video from the Center for Immigration Studies explains why the number of migrants crossing at the Del Rio sector of the southern border has increased from the normal low hundreds a few weeks ago to more than 5,700 migrants this last week, with 1,700 “got aways.” Standing in Mexico looking out on the Del Rio sector of the border, Todd Bensman, the Center’s senior national security fellow, describes how migrants are gaming the Mexican National Guard, locating border weaknesses, and gaining entry to the U.S.