Five Major Climate Policies Trump Would Probably Reverse if Elected

Former President Donald J. Trump has vowed to “cancel” President Biden’s policies for cutting pollution from fossil-fuel-burning power plants, “terminate” efforts to encourage electric vehicles, and “develop the liquid gold that is right under our feet” by promoting oil and gas.

Those changes and others that Mr. Trump has promised, if he were to win the presidency again, represent a 180-degree shift from Mr. Biden’s climate agenda.

When he was president, Mr. Trump reversed more than 100 environmental protections put in place by the Obama administration. Mr. Biden has in turn reversed much of Mr. Trump’s agenda.

But climate advocates argue a second Trump term would be far more damaging than his first, because the window to keep rising global temperatures to relatively safe levels is rapidly closing.

“It would become an all-out assault on any possible progress on climate change,” said Pete Maysmith, the senior vice president of campaigns at the League of Conservation Voters, an environmental group.

Senior Republicans don’t necessarily disagree. Michael McKenna, who worked in the Trump White House and is supporting Mr. Trump’s bid for a second term, said the approach to climate change would likely be one of “indifference.”