The former acting attorney general took aim at the president over his Helsinki meeting with Putin.
Whether Trump will fire Mueller "creates a tremendous amount of anxiety," Yates said.
A former Watergate prosecutor claimed the president's recent attacks on the FBI could be threats against potential witnesses.
Yates, jumped at the defense of the FBI's Deputy Director Andrew McCabe in a nod to 'A Christmas Carol.'
The GEO Group donated six-figure sums to a pro-Trump group, and is now receiving nine-figure government contracts.
Trump fired Yates three days into his administration after she told justice department lawyers not to defend his executive order.
The former deputy attorney general, who was fired by the Trump administration, received a wave of support after delivering testimony on Capitol Hill.
Sally Yates shines, while the Caps and Chris Froome survive.
Sally Yates testified on Monday that she spoke to the White House several times and warned that Michael Flynn's actions left him open to Russian blackmail.
The former acting U.S. attorney general's testimony will reveal "who knew what when" about Flynn's Russia contacts, says Senator Feinstein.
The vast majority of privately run prisons are at the state level and will be unaffected by the DOJ announcement.