A Senate panel on Wednesday rejected a push from Sen. Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE (I-Vt.) to acknowledge climate change in an energy reform bill.

Sanders, who is running for the Democratic presidential nomination, had pushed an amendment to the chamber’s energy bill affirming the sense of Congress that climate change is real and that more needs to be done in the energy sphere to confront it.

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“I think, for those who are planning to vote against the amendment, speak to your kids, think about your grandchildren,” Sanders said at an Energy and Natural Resources Committee mark-up. “Because I think that history will record you on the very, very, very wrong side of this enormous issue.”

The whole Senate voted on similar climate change resolutions earlier this year. Democrats on the committee, including Sen. Elizabeth Warren (D-Mass.) and ranking member 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 (D-Wash.), spoke in favor of Sanders's proposal, even as they noted that the measure was a mostly symbolic addition to the energy package.

“I don’t think the world is going to change overnight because of the Sanders amendment, but I do think it’s the recognition that a transformation has to happen.” Cantwell said.

But most members — including Sen. Joe Manchin (D-W.Va.) — were opposed. Committee chairwoman Lisa Murkowski Lisa Ann MurkowskiMcConnell locks down key GOP votes in Supreme Court fight Most Americans think winner of election should pick next Supreme Court justice: poll Murkowski: Supreme Court nominee should not be taken up before election MORE (R-Alaska) said the provision was unnecessary because of the resolution senators approved this session and because of the work members put into the underlying bill.

“I think everything that we have done along the way is designed to move us towards that cleaner, more efficient, more responsible, greater focus on our environment, while at the same time ensuring a level of affordability and access to all Americans,” she said.

Senators worked through 20 amendments to the energy bill on Wednesday — including 12 non-controversial provisions they lumped together and passed as one — bringing their tally to 45 over two days. Members introduced 94 amendments to the bill before the mark-up began.

The hearing had a sharper edge than the first mark-up meeting on Tuesday.

A debate flared up over an amendment from Sen. Angus King (I-Maine) requiring regulators to perform an environmental review before approving new liquefied natural gas export permits. The underlying bill, Republicans noted, looks to speed up permitting, and the amendment was likely to slow it down instead.

“I believe that this amendment, if adopted, would severely degrade the bipartisan support that this legislation currently enjoys,” Sen. John Barrasso John Anthony BarrassoMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (R-Wyo.) said.

The climate change and export amendments were among the first to reveal the political hatchets members have buried to try advancing the energy bill.

Much of Tuesday’s hearing looked like the first a three-day victory lap for Murkowski, Cantwell and the committee. In discussing the bill, members often lauded the bipartisan nature of it and the congenial way with which the committee was marking it up.

Ahead of the climate change and natural gas export debates, that mood was present on Wednesday. Before the committee rejected a Sanders measure to provide grants for low-income families to buy solar panels for their homes, Murkowski joked that the proposal’s acronym — "LISA" — might be a long-shot play to try winning her support.

“I’m trying to get your vote on this,” Sanders joked. “It was going to be ‘Barrasso,’ but it doesn’t quite fit.”

Murkowski said after the hearing that the amendments members pushed Wednesday were likely the most contentious the committee would consider. The committee will meet again Thursday to mark up the bill.