A spokesman for Mr. Trump did not respond to requests for comment.
Mr. Trump used the term “civil war” in 2019, when he declared in a tweet that “it will cause a Civil War-like fracture in this Nation from which our Country will never heal” if he was removed from office. Last month, Mr. Trump said there would be “problems in this country the likes of which perhaps we’ve never seen before” if he was indicted over his handling of the classified documents that were the target of the F.B.I. search.
Other Republicans have used language suggesting the country is on the brink. Ms. Greene wrote in August that the Mar-a-Lago search reflected the “type of things that happen in countries during civil war,” in posts to her nearly 900,000 combined followers on Facebook and Telegram. Senator Rick Scott of Florida likened the F.B.I. to the Gestapo, the secret police in Nazi Germany, saying “this cannot be our country.”
Late last month, Senator Ted Cruz, a Republican, told The Texas Tribune he believed immigration legislation was unlikely in part because of a “political civil war.” He has made similar comments before, including a November 2021 call for Texas to secede if Democrats “destroy the country.”
Nick Dyer, a spokesman for Ms. Greene, said that she was “vehemently opposed to political violence” and that her civil war comments were about Democrats, who “are acting like a regime launching a war on their opposition.”
McKinley Lewis, communications director for Mr. Scott, said he had “ZERO tolerance for violence of any kind” but added that he “continues to demand answers” related to the F.B.I.’s Mar-a-Lago search.
Republicans have often argued that their language is political rhetoric and blamed Democrats for twisting it to stoke divisions. It’s Democrats and the left, they said, who are courting violence by labeling Mr. Trump’s supporters adherents of what Mr. Biden has called “semi-fascism.”
In response to a query about Mr. Cruz’s comments, Maria Jeffrey Reynolds, a spokeswoman for the senator, said Mr. Cruz placed blame on President Biden, claiming that he has “driven a wedge down the middle of our country.”