That investigation was subsequently taken over by Special Counsel Robert Mueller, who is expected to deliver his findings to the U.S. attorney general within weeks. They also plan to use potentially incriminating testimony provided last week by Trump's former "fixer", Michael Cohen, as part of their efforts.
The United States House Judiciary Committee announced on Sunday that it will request documents from over 60 entities and individuals in a sweeping new investigation into allegations of abuse of power and obstruction of justice by US President Donald Trump.
Elsewhere, House Oversight and Reform Committee Chairman Elijah E. Cummings, Maryland Democrat, said he has run out of patience with the White House for failing to produce documents related to its handling of security clearances, particularly in light of reports that Mr. Trump intervened to grant his son-in-law, Jared Kushner, a top-level clearance.
Nadler also said that officials who are now serving or who have previously worked in the White House and the Department of Justice for the administration will be asked to provide information to the committee.
Otherwise, Nadler told ABC "This Week" host George Stephanopoulos, "that turns it into a cover-up".
"It's very clear", Nadler said, "1,100 times he referred to the Mueller investigation as a witch hunt, he tried to - he fired - he tried to protect Flynn from being investigated by the FBI".
Alabama sheriff: 14 dead in possible tornado
Large-scale search and rescue operations have been launched in Lee County, where officials reported multiple injuries. The tornado watch also covered a large area of SC , including the cities of Charleston and Columbia.
Trump, taking to Twitter after Nadler's comments, lashed out anew at "more than two years of Presidential Harassment".
Judiciary Committee Democrats will continue building their possible impeachment case Monday, when dozens of demands for documents will be issued to administration officials and the president's business interests.
Obstruction of justice has figured into two of those proceedings. He said Republican lawmakers "threatened to impeach people in Justice Department, they threatened the - the Mueller investigation". He remains the only USA president ever to resign from office.
"Yeah, It is a very high bar", Nadler said. We don't have the facts yet.
Congressman Jerry Nadler has affirmed that he believes President Donald Trump has "obstructed justice".
Nadler's announcement comes as the investigation led by special counsel Robert Mueller appears to be nearing an end. The party's activist base is adamant that Trump be impeached, however there is concern within the party's establishment wing that impeachment could play into Trump's hands. Before you impeach somebody, you have to persuade the American public that it ought to happen.
Sen. Mark Warner, the top Democrat on the Senate Intelligence Committee, told CNN that after hearing Cohen's testimony, "We've got to dig deeper" about the extent to which Trump pursued construction of a skyscraper in Moscow during the 2016 campaign even as he told voters he was not involved in any Russian business deals. "We do not now have the evidence all sorted out and everything to do an impeachment", Nadler said. We can take it or leave it. At this point, no matter how much evidence is accumulated, does anyone really believe that Trump voters will ever see this president clearly enough to support impeachment?