Manchin: We're 'on the verge' of a constitutional crisis due to Sessions's firing

Sen. Joe ManchinJoseph (Joe) ManchinDemocrats Manchin, Jones signal they're undecided on Trump removal vote Schiff sparks blowback with head on a 'pike' line Schiff closes Dems' impeachment arguments with emotional appeal to remove Trump MORE (D-W.Va.) said Thursday that the U.S. is on the "verge" of a constitutional crisis because of the forced resignation of Attorney General Jeff SessionsJefferson (Jeff) Beauregard SessionsLawmaker wants Chinese news outlet to register as foreign agent Trump-aligned group launches ad campaign hitting Doug Jones on impeachment ICE subpoenas Denver law enforcement: report MORE

"I think it’s a big mistake to let Sessions go," Manchin, who was the only Democratic senator to vote to confirm the former attorney general, said on "CBS This Morning."

Manchin pointed to the potential ramifications Sessions's ouster could have on special counsel Robert MuellerRobert (Bob) Swan MuellerSchiff: Trump acquittal in Senate trial would not signal a 'failure' Jeffries blasts Trump for attack on Thunberg at impeachment hearing Live coverage: House Judiciary to vote on impeachment after surprise delay MORE's investigation into Russia's election interference to back up his claim. 

His comments came just a day after Sessions formally resigned from his role at the Department of Justice at President TrumpDonald John TrumpKaine: Obama called Trump a 'fascist' during 2016 campaign Kaine: GOP senators should 'at least' treat Trump trial with seriousness of traffic court Louise Linton, wife of Mnuchin, deletes Instagram post in support of Greta Thunberg MORE's request. Trump announced on Twitter on Wednesday that Matthew Whitaker, Sessions's chief of staff, will serve as acting attorney general. 

ADVERTISEMENT

Whitaker, who has publicly criticized certain elements of the Mueller investigation, will now oversee it.

Deputy Attorney General Rod RosensteinRod RosensteinRosenstein says he authorized release of Strzok-Page texts Journalist alleging Obama administration spied on her seeks to reopen case Rosenstein on his time in Trump administration: 'We got all the big issues right' MORE had been overseeing the probe since Sessions recused himself in early 2017. 

Democratic lawmakers, including Manchin, have criticized Whitaker's oversight of the Mueller probe.

"What raises my concerns is a person that's been so vocal against the investigation that was going on is [put] in charge a day after the [midterm] election," Manchin told CBS. "I think that gives concern to every senator, Democrat and Republican. We are a country — the rule of law is everything.

"Looking like it's been tilted one way or the other is wrong."

Trump has repeatedly called the Russia investigation a "witch hunt," and on Wednesday said that he could fire everyone in Mueller's office if he wanted. He said he would not take that step for political reasons, however.