DHS secretary outlines border and security concerns

DHS Secretary Markwayne Mullin joins 'America's Newsroom' to discuss a cockpit assault aboard a FlyDubai flight, a migrant caravan heading toward the U.S. southern border and broader national security concerns.

DHS Secretary Markwayne Mullin discusses a cockpit assault aboard a FlyDubai flight, a migrant caravan heading toward the U.S. southern border and broader national security concerns. He outlines ongoing security efforts as federal agencies continue monitoring potential threats and the border.