Full briefing: Tom Homan's big revelation on Trump plan to send US army into Mexico| border| cartels

President Donald Trump’s border czar suggested on Monday that Alcatraz, the notorious former prison on a hard-to-reach California island off San Francisco that has been closed for more than 60 years, could ease migrant detention crunch. Border Czar Tom Homan says of Trump’s idea to reopen Alcatraz, “We need detention beds.” Homan also opened up on speculations about Trump's plan to send U.S. army into Mexico. Watch here.