Rep. Jim Himes James (Jim) Andres HimesMany Democrats want John Bolton's testimony, but Pelosi stays mum SEC's Clayton demurs on firing of Manhattan US attorney he would replace Democrats face tough questions with Bolton MORE (D-Conn.) predicted Sunday that special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's full report will show that there was "plenty of reason to be concerned" about contacts between members of 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's campaign and Russia.

“When the report comes out, what the American people will learn was that there was plenty of reason to be concerned about the nature of those contacts and the possibility of what those contacts might have met," he said during an interview on "Fox News Sunday."

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Himes, a member of the House Intelligence Committee, added that "we’re all speculating about" what's in the report, which is reportedly more than 300 pages long.

"My guess is that when you see the whole report, you will see good reasons for why a number of people … were concerned by the possibility, since disproved, that the Trump campaign was colluding with the Russians," Himes added.

Attorney General William Barr Bill BarrProsecutor says no charges in Michigan toilet voting display Judge rules Snowden to give up millions from book, speeches The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE said last week that he expects to release the full report by mid-April, "if not sooner."

Democrats have demanded the full report in the days since Barr summarized the report in a letter to Congress. Barr said in the letter that Mueller, who investigated Russian interference in the 2016 election, determined that the Trump campaign did not coordinate with Russia ahead of the election.

Mueller did not reach a conclusion on whether President Trump obstructed justice, but Barr and Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE determined that Trump did not do so.