President Donald Trump may pull the United States out of the Paris Agreement on climate change as early as next week, sources with knowledge of the plans told HuffPost on Tuesday.

The historic agreement between 195 countries to cut greenhouse gas emissions and combat climate change, reached in December 2015, is the first global climate accord to include the U.S. and China, the worlds top polluters. While Trump promised to withdraw from the agreement right after assuming office, that hasnt yet transpired. What to do about the Paris Agreement has reportedly divided the administration , with Secretary of State Rex Tillerson, Energy Secretary Rick Perry and Trumps daughter and adviser Ivanka wanting to renegotiate the U.S. terms , while Environmental Protection Agency chief Scott Pruitt and chief strategist Steve Bannon argue to pull out.

White House lawyers drafted a memo following a meeting last Thursday that argued that the administration could face legal blowback in U.S. courts if it moves to weaken the countrys emissions goals under the agreement. White House advisers convened lawyers from the Department of Justice, EPA and State Department on Monday to discuss the legal arguments. The president said over the weekend that he would make a decision on the agreement in the next two weeks.

The administration has yet to take a final decision, sources said. The White House declined to comment.

Remaining in the Paris Agreement could strengthen environmental lawsuits against the White House over its climate agenda, such as the rollback of the Clean Power Plan, the sweeping Obama-era regulation to cut emissions from the utility sector, the lawyers argued, according to a source with direct knowledge of the meeting.

A source in the State Department said a document circulating in the agency this week contained legal justifications for a U.S. exit from the Paris Agreement. The document, obtained by HuffPost , seemed to originate from States legal office, according to the source, and almost immediately caused anxiety among State staff who work on climate issues. People were calling around, asking if it was real or fake, said the source, who requested anonymity in order to discuss internal agency documents.

The Paris Agreement allows for countries to pull out three years after the accord takes effect, meaning the Trump administration could officially withdraw on Nov. 9, 2019, the memo says. The withdrawal would be complete one year later.

While formal withdrawal could not be initiated until November 2019, in effect the United States could announce a plan to withdraw and reduce or cease participation in Paris Agreement activity earlier, the memo reads. We would not have any Paris Agreement reporting requirements to fulfill in the meantime, as the first reports under the Paris Agreement reporting system are not expected to need to be submitted until at least 2021 or 2022.

Any push to exit the agreement sooner would be inconsistent with international law and would not be accepted internationally, it said.