President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE reacted angrily to a Republican congressman who challenged him on false claims about the size of his inauguration crowd, responding, "Who the f--- are you?" according to a new book.

The anecdote is included in a new book by Politico reporters Jake Sherman and Anna Palmer titled "A Hill To Die On."

Rep. Bill Posey William (Bill) Joseph PoseyOVERNIGHT ENERGY: 20 states sue over Trump rule limiting states from blocking pipeline projects | House Democrats add 'forever chemicals' provisions to defense bill after spiking big amendment | Lawmakers seek extension for tribes to spend stimulus money House Democrats add some 'forever chemicals' provisions to defense bill after spiking major amendment House Republicans urge White House to support TSA giving travelers temperature checks MORE (R-Fla.) reportedly urged the president to stop the "tweets and whining about crowd size" at his inauguration, prompting Trump to respond, "Who the f--- are you?" before repeating the falsehood that he had the "biggest inauguration" ever, according to an excerpt from the book mentioned by The Washington Post.

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The book also features an Oval Office interview with Trump in which he tells the authors that he was largely unbothered by the Democrats’ victory in the 2018 midterms, saying legislative quid pro quos among various factions of the Republican caucus made legislation impossible even with his party in control.

"Now, I just say 'Hey, folks, let’s go. Give me legislation. Let me see. And if we like it, we’ll work on it,'" Trump told Sherman and Palmer, according to the Post.

Trump also told the authors that if Speaker Nancy Pelosi Nancy PelosiPelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare House lawmakers reach deal to avert shutdown Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill MORE (D-Calif.) had failed to secure the votes among her caucus to assume the speakership, he would have asked his allies in the conservative House Freedom Caucus to contribute enough votes to put her over the top.

The book also delves into the relationship between House Minority Leader Kevin McCarthy Kevin Owen McCarthyMcCarthy's Democratic challenger to launch first TV ad highlighting Air Force service as single mother Trump asked Chamber of Commerce to reconsider Democratic endorsements: report The Hill's Morning Report - Sponsored by The Air Line Pilots Association - White House moves closer to Pelosi on virus relief bill MORE (R-Calif.) and House Minority Whip Steve Scalise Stephen (Steve) Joseph ScaliseHouse GOP slated to unveil agenda ahead of election House panel details 'serious' concerns around Florida, Georgia, Texas, Wisconsin elections Scalise hit with ethics complaint over doctored Barkan video MORE (R-La.) as they jockeyed to succeed retiring Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis.).

Scalise gathered advisers and allies at Del Frisco’s Double Eagle Steakhouse to discuss possibly challenging McCarthy for the position of top Republican in the House, according to the book. McCarthy was reportedly furious when he discovered the dinner had taken place, but Scalise denied he was there. McCarthy told Scalise he had "had it" and would not serve on a divided leadership team.

"It’s completely inaccurate to suggest Whip Scalise lied to Leader McCarthy," Scalise spokesperson Lauren Fine told the Post.