The Senate voted Wednesday to advance President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s nominee to the Federal Energy Regulatory Commission (FERC) despite Sen. Joe Manchin Joseph (Joe) ManchinThe Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week Trump meets with potential Supreme Court pick Amy Coney Barrett at White House Names to watch as Trump picks Ginsburg replacement on Supreme Court MORE’s (D-W.Va.) surprise vote against him.

Lawmakers voted 50-49 to limit debate on Bernard McNamee’s nomination to be a FERC commissioner. All Republicans voted “yes,” and all Democrats voted “no,” while Sen. Thom Tillis Thomas (Thom) Roland TillisThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting OVERNIGHT ENERGY: EPA head questions connection of climate change to natural disasters | Pebble Mine executives eye future expansion in recorded conversations | EPA questions science linking widely used pesticide to brain damage in children Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight MORE (R-N.C.) wasn’t present.

The Senate plans to vote Thursday on McNamee's final confirmation to the five-person body.

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McNamee has faced strong opposition from Democrats, environmentalists and others. He formerly worked at the Energy Department under Trump, helping to advance controversial policies including the administration’s attempts to bail out the coal and nuclear power industries — a version of which FERC unanimously rejected earlier this year.

Manchin voted for McNamee in the Energy and Natural Resources Committee last week, the only Democrat to do so.

But he flipped Wednesday, voting “no” on the procedural vote. He explained in a statement that only after the committee vote did he see a video of McNamee speaking at a Texas Public Policy Foundation event in February in which he harshly criticized renewable energy, cheered fossil fuels and threw doubt on climate change science.

McNamee worked for a Texas conservative think tank at the time.

“After viewing video footage, which I had not previously seen, where Bernard McNamee outright denies the impact that humans are having on our climate, I can no longer support his nomination to be a FERC commissioner,” he said in the statement. “Climate change is real, humans have made a significant impact, and we have the responsibility and capability to address it urgently.”

Manchin is currently seeking to become the top Democrat on the Energy and Natural Resources Committee after Sen. Maria Cantwell Maria Elaine CantwellHillicon Valley: Zuckerberg acknowledges failure to take down Kenosha military group despite warnings | Election officials push back against concerns over mail-in voting, drop boxes Bipartisan senators call for investigation of popular fertility app The Hill's Coronavirus Report: Mike Roman says 3M on track to deliver 2 billion respirators globally and 1 billion in US by end of year; US, Pfizer agree to 100M doses of COVID-19 vaccine that will be free to Americans MORE’s (D-Wash.) expected move to lead the Commerce, Science and Transportation Committee.

McNamee's admiration for coal and for Trump administration policy alarms environmentalists.

The video in question had been removed from the internet by the think tank. But a group opposing his nomination saved it, and Utility Dive published it in November, before the committee vote.

Manchin, who narrowly won reelection last month in coal-heavy West Virginia, told McNamee at his confirmation hearing last month that he viewed the nominee’s support for coal positively.

“I'm probably one of the only ones on my side who appreciates where you're coming from,” he said.

FERC commissioners are expected to be independent and neutral on issues such as energy fuel sources in the matters they oversee, including interstate natural gas pipelines and bulk electricity markets. And McNamee told senators he would respect that.

“If confirmed, I commit that I will be a fair, objective and impartial arbiter in the cases and issues that would confront me as a commissioner. My decisions will be based on the law and the facts, not politics,” he said.

Republicans took McNamee at his word.

“I believe that Mr. McNamee understands, and understands well, that FERC is an independent agency, and it must continue to function as such,” Sen. Lisa Murkowski Lisa Ann MurkowskiSenate GOP aims to confirm Trump court pick by Oct. 29: report Senate GOP sees early Supreme Court vote as political booster shot Pence defends Trump's 'obligation' to nominate new Supreme Court justice MORE (R-Alaska), the Energy Committee’s chairwoman, said on the Senate floor. “And I take his commitment to uphold FERC’s autonomy and maintain an independent role as a commissioner at face value.”

Democrats said McNamee has demonstrated his inability to be neutral.

“I would like to have taken Mr. McNamee at his word when he came before the Senate Energy Committee to say that he would be ‘a fair and objective and impartial arbiter,’ ” Cantwell said.

But his remarks in the video, and his overall record, “reveal a very strong bias in favor of fossil fuels against renewable energy,” she said.