Amash has not been the only Republican to bring up Trump's impeachment, either; while he was certainly one of the first, Florida Rep.
Here's what the committees are seeking and how it will affect ongoing investigations into allegations of collusion between the Trump campaign and Russian officials.
The release of Comey memos and other materials to Congress would immediately change the nature of congressional investigations into the president and Russian Federation.
Former FBI Director James Comey may have been building a case against President Donald Trump before he was sacked, a former Justice Department official said.
Sen. John McCainJohn McCainTurkish violence in Washington presents new Trump headache McCain: Talk of impeaching Trump not "rational" Senate panel approves bill allowing some border patrol agents to skip polygraphs MORE (R-Ariz.) on Wednesday said that calls from congressional Democrats to impeach President Trump are not "rational".
Burr and Warner also called for Comey, who hasn't appeared before the committee since his May 9 firing, to testify in closed and open sessions.
It asked acting FBI Director Andrew McCabe to hand over any notes Comey has of conversations between the White House and Justice Department officials about the Russian Federation probe.
Mr Trump has remained uncharacteristically quiet on Twitter in regards to the matter, but vented his frustration during a commencement address at the US Coast Guard Academy overnight.More news: Cole shuts down Nationals as Pirates roll to 6-1 win
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"Look at the way I have been treated lately, especially by the media. No politician in history, and I say this with great surety, has been treated worse or more unfairly", Trump said.
In the face of unfairness, "you have to put your head down and fight, fight, fight. Never, ever, give up". Moscow has denied United States intelligence agencies' conclusion it meddled in the campaign to try to tilt the election in Trump's favor.
Members of the Senate Judiciary Committee also planned to ask Comey to testify, The Hill reported. Ryan backed Chaffetz's request.
"The memo is powerful evidence of obstruction of justice and certainly merits immediate and prompt investigation by an independent special prosecutor", he said. An obstruction of justice charge would need to meet three key requirements under the law, Joshua Matz, an attorney and constitutional law expert, wrote in an email: "1) there must have been a pending federal investigation or proceeding; 2) the defendant must have known about it; and 3) the defendant must have corruptly endeavored to influence, obstruct, or impede the investigation or proceeding".
Democratic representative Al Green spoke from the House floor yesterday to demand Mr Trump's impeachment, saying "democracy is at risk" in the US. "But everybody gets a fair trial in this country", he added. The west MI libertarian never endorsed Trump and was a driving force in rejecting an early version of a health care reform bill, a move that led to discussions of his being potentially targeted for defeat next year by the White House. A small number of Democrats also have mentioned impeachment.
The turmoil surrounding the disclosure of the memo followed a week of chaos at the White House after Trump fired Comey and then discussed sensitive national security information about Islamic State with Russian Foreign Minister Sergey Lavrov.
President Donald Trump's decision to disclose allegedly classified information to Russian officials could threaten vital foreign intelligence ties, testing key allies' confidence in the United States just days before the USA leader heads to the Middle East and Europe.