The future interior chief says there is no agreement with the Trump administration on a "Remain in Mexico" plan for Central American migrants.
The U.S. military has been forbidden from enforcing immigration law since 1878.
The president has asserted the same powers he used to push through a version of the travel ban that was upheld by the Supreme Court.
A federal court-ordered deadline to reunite families has come and gone, yet thousands of minors remain in custody.
Rep. Jeff Denham is just the latest elected official to be denied access to a migrant holding facility.
Cities from California to Virginia are terminating agreements with ICE, despite the loss of substantial revenues.
Nearly 3 million new refugees were created between 2016 and 2017, as the U.S. and European countries cracked down on asylum-seekers.
Fifteen former immigration judges have signed a letter calling the attorney general's decision "an affront to the rule of law."