After releasing a damning draft memo that showed the Trump administration planned to "traumatize" migrant children with family separations and expedite deportation by denying asylum hearings, Sen. Jeff Merkley (D-Ore.) on Friday called for an FBI investigation into whether Homeland Security Sec. Kirstjen Nielsen lied when she testified before Congress about the policy.

"Despite this fact," Merkley continued, "while testifying under oath before the House Committee on the Judiciary, Secretary Nielsen stated unequivocally 'I'm not a liar, we've never had a policy for family separation.'" Given the "conflicting facts," Merkley formally demanded an immediate investigation.