The request, which is under review by the Pentagon, is part of a renewed push by the Trump administration to ramp up arrests of undocumented migrants

WASHINGTON (AP) — The Department of Homeland Security has asked for 20,000 National Guard troops to assist with immigration roundups across the country, and the Pentagon is reviewing the unusual request, a U.S. official confirmed to The Associated Press.

The Department of Homeland Security is requesting 20,000 National Guard members for help with the Trump administration's crackdown on immigration at the southern border. New York Times Pentagon Correspondent Helene Cooper and Senior Editor at The Atlantic Hanna Rosin join Katy Tur to explain more.