Sen. Christopher Coons Christopher (Chris) Andrew CoonsBiden promises Democratic senators help in battleground states Shakespeare Theatre Company goes virtual for 'Will on the Hill...or Won't They?' The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-Del.) on Monday said he would encourage House Foreign Relations Committee Chairman Eliot Engel Eliot Lance EngelThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Coons beats back progressive Senate primary challenger in Delaware Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' MORE (D-N.Y.) to look into how 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 conducts meetings with foreign heads of state in the wake of a report that the president has concealed the details of his talks with Russian President Vladimir Putin.

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Coons said in an appearance on CNN's "New Day" that a Washington Post report that Trump has gone as far as to withhold notes from an interpreter at a meeting with Putin is "very concerning," but added that it is not conclusive of misconduct on its own.

"On this specific question about how our president conducts meetings with foreign heads of state, I do think Chairman Engel in the House should be looking into this," said Coons, a member of the Senate Foreign Relations Committee.

"What concerns me is that when he’s met with other heads of state, he has followed more traditional protocol. ... With Russia he hasn’t done that," Coons said.

"He ran as an unconventional candidate, and he has certainly overperformed in that category ... Yes, I have had significant concerns about what is motivating this unprecedented attitude towards Russia." - Sen. @ChrisCoons on President Trumphttps://t.co/j1bLTX5sDn pic.twitter.com/zkLfvkb5lP — New Day (@NewDay) January 14, 2019

The Washington Post reported Saturday that Trump has kept details of his meetings with Putin from top officials in his administration, including withholding notes from an interpreter.

The report came a day after The New York Times reported that the FBI was so concerned about Trump’s firing of former bureau chief James Comey that it opened an inquiry into whether the president was working on behalf of Russian interests.

The White House has dismissed the reports as “inaccurate” and defended Trump’s record on Russia, while the president called the stories “insulting” and “ridiculous.”