President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE on Monday praised House Intelligence Committee Chairman Devin Nunes Devin Gerald NunesSunday shows preview: With less than two months to go, race for the White House heats up Sunday shows preview: Republicans gear up for national convention, USPS debate continues in Washington Sunday shows preview: White House, congressional Democrats unable to breach stalemate over coronavirus relief MORE (R-Calif.) for “what he has had to endure” after the congressman led efforts to release a classified memo that accuses the Justice Department of surveillance abuses.

“Representative Devin Nunes, a man of tremendous courage and grit, may someday be recognized as a Great American Hero for what he has exposed and what he has had to endure!” Trump tweeted.

Representative Devin Nunes, a man of tremendous courage and grit, may someday be recognized as a Great American Hero for what he has exposed and what he has had to endure! — Donald J. Trump (@realDonaldTrump) February 5, 2018

The tweet came not long after Trump launched an attack on the ranking Democrat on the committee, Rep. Adam Schiff Adam Bennett SchiffOvernight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings MORE (Calif.), whom the president accused of being "one of the biggest liars" in Washington.

Little Adam Schiff, who is desperate to run for higher office, is one of the biggest liars and leakers in Washington, right up there with Comey, Warner, Brennan and Clapper! Adam leaves closed committee hearings to illegally leak confidential information. Must be stopped! — Donald J. Trump (@realDonaldTrump) February 5, 2018

Schiff later fired back at Trump, telling him to stop tweeting "false smears" and help "solve the funding crisis, [protect] Dreamers or...really anything else."

Mr. President, I see you’ve had a busy morning of “Executive Time.” Instead of tweeting false smears, the American people would appreciate it if you turned off the TV and helped solve the funding crisis, protected Dreamers or...really anything else. https://t.co/lVqQRu2Gjl — Adam Schiff (@RepAdamSchiff) February 5, 2018

Staff for Nunes authored the four-page memo, which was released Friday. It accuses senior Justice Department officials of improperly using information from the controversial "Steele dossier" — which originated as an opposition research document during the 2016 campaign — to obtain surveillance warrants on Carter Page, a member of the Trump transition team and former Trump campaign adviser.

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While Republicans, including Nunes, have argued the memo proves bias against President Trump within the Justice Department, Democrats have bashed the document as containing cherry-picked facts in an effort to undermine the investigation into Russian interference in the 2016 election.

Schiff suggested Sunday that it's possible Nunes worked with the White House in crafting the memo.

Democrats have called for the House Intelligence Committee to release the party's countermemo, which reportedly addresses claims in the Republican document. The committee is expected to vote Monday on the Democratic memo.