Rep. Adam Schiff Adam Bennett SchiffPelosi, Democrats unveil bills to rein in alleged White House abuses of power Chris 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 MORE (D-Calif.) said on Sunday that President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE is acting as if he has been "compromised" by the Russians, floating once again the notion that Moscow could have damaging information on the U.S. leader.

"I certainly think he’s acting like someone who’s compromised, and it may very well be that he is compromised or it may very well be that he believes that he’s compromised, that the Russians have information on him," Schiff said on ABC's "This Week."

Rep. Adam Schiff tells @gstephanopoulos Pres. Trump is "acting like someone who's compromised."

"It may very well be that he is compromised or it may very well be that he believes that he's compromised, that the Russians have information on him." #ThisWeek https://t.co/P6iz1j1VA4 pic.twitter.com/fc3CIRqdl4 — This Week (@ThisWeekABC) July 22, 2018

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Trump came under intense bipartisan scrutiny last week after a controversial joint news conference with Russian President Vladimir Putin in Helsinki in which the U.S. leader challenged the assessment of his own intelligence community that Moscow meddled in the 2016 election. He later walked back those remarks.

He also appeared to place blame on the U.S. for current tensions with Russia, saying that Washington has been "foolish."

In an op-ed for The New York Times last week, Rep. Will Hurd William Ballard HurdHillicon Valley: Oracle confirms deal with TikTok to be 'trusted technology provider' | QAnon spreads across globe, shadowing COVID-19 | VA hit by data breach impacting 46,000 veterans House approves bill to secure internet-connected federal devices against cyber threats House Democrats' campaign arm reserves .6M in ads in competitive districts MORE (R-Texas), a former CIA agent, warned that the U.S. president appeared to be "manipulated" by Moscow and was "playing into Vladimir Putin’s hands."

Tom Bossert, Trump's former homeland security adviser, pushed back on Schiff's remarks on Sunday, saying on "This Week" that it was a "cheap shot" to suggest that the president had been compromised by Moscow.

"It’s an easy, cheap shot to say the president’s been compromised by the Russians," Bossert said.

"I think the Russians elected a former KGB agent and he spends all of his time and their resources squandering it on penny-ante spy tactics to try to get into loser kind of lobbyist pockets and so forth," he added, referencing Putin's past as an intelligence agent.