A senior Vatican official says they would view President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE pulling the U.S. out of the Paris climate agreement as a “huge slap in the face.”

“If he really does [pull out], it would be a huge slap in the face for us,” Bishop Marcelo Sánchez Sorondo said Thursday, according to Reuters. “It will be a disaster for everyone.”

Sánchez Sorondo said he believes the U.S. oil lobby “maneuvered” Trump into opposing the global climate pact, which includes nearly 200 nations.

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“[Withdrawing] would not only be a disaster but completely unscientific,” added Sánchez Sorondo, who is head of the Vatican's Pontifical Academy of Sciences.

"Saying that we need to rely on coal and oil is like saying that the earth is not round. It is an absurdity dictated by the need to make money.”

Trump is expected to announce that the U.S. will exit the Paris accord during a 3 p.m. event in the White House Rose Garden.

Axios on Wednesday reported that Trump is finalizing a strategy with Environmental Protection Agency (EPA) Administrator Scott Pruitt for exiting the landmark pact.

Pope Francis Pope FrancisVatican cardinal in charge of saint making resigns amid financial scandal Nuns criticize Catholic group for giving Barr award for 'Christlike behavior' Pope seeks to prevent Mafia from using Virgin Mary imagery MORE last week gave Trump a copy of his 2015 encyclical letter on the environment and climate change during their meeting at the Vatican.

Francis strongly supports the Paris climate deal, the 2015 agreement that aims to cut emissions blamed for global warming.

By exiting the agreement, Trump would be fulfilling a campaign pledge, but the move would make the U.S. a global outlier on climate policy.