President Trump criticized Rep. Adam Schiff Adam Bennett SchiffChris Matthews ripped for complimenting Trump's 'true presidential behavior' on Ginsburg Trump casts doubt on Ginsburg statement, wonders if it was written by Schiff, Pelosi or Schumer Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence MORE (Calif.) in a tweet on Monday, referring to the senior Democrat on the House Intelligence Committee as "sleazy" and "biased."

"Sleazy Adam Schiff, the totally biased Congressman looking into 'Russia,' spends all of his time on television pushing the Dem loss excuse!" Trump tweeted Monday.

Sleazy Adam Schiff, the totally biased Congressman looking into "Russia," spends all of his time on television pushing the Dem loss excuse! — Donald J. Trump (@realDonaldTrump) July 24, 2017

Schiff on Sunday said that Trump is concerned that the special counsel investigation into Russian meddling in the 2016 presidential election could include his finances.

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“The president is clearly worried” about accusations that Russia laundered money through the Trump Organization, Schiff told CBS’s “Face the Nation.”

“What concerns me the most is anything that could be held over the president’s head that could influence U.S. policy,” Schiff added.

Trump in an interview last week said that it would be "a violation" for special counsel Robert Mueller to investigate his or his family’s finances beyond looking for potential ties between Trump’s campaign staff members and the Kremlin.

Trump has in the past decried the Russia probe as a "witch hunt" and as a Democratic excuse for losing the presidential race.