(NBC) - Attorney General Jeff Sessions is out of a job.
Sessions offered his resignation Wednesday, at President Trump's request.
The move came after months of bad blood between Mr. Trump and Sessions, the first U.S. to support his bid for the presidency, that began when Sessions recused himself from overseeing special counsel Robert Mueller's probe into possible Russian campaign meddling.
Many believe Sessions' firing may be President Trump's first step toward ending the probe.
"I think we're watching obstruction of justice play out right in plain sight," says former FBI Assistant Director Frank Figliuzzi.
President Trump made it clear he thought Sessions should've never stepped down from overseeing the Russia investigation.
Replacing Sessions for now is his chief of staff, Matt Whitaker, who's been publicly critical of Robert Mueller's investigation.