She detailed her concerns in a letter sent Wednesday to Defense Secretary Jim Mattis.
Republican Sen. Charles Grassley of Iowa and Democratic Sen.
Ryan's comments after a closed-door meeting of House Republicans came as lawmakers grappled with a series of damaging developments out of the White House over the past week.
WASHINGTON The oversight committee chosen by House Speaker Paul Ryan to investigate whether President Donald Trump obstructed an FBI probe has been the most publicly aggressive group involved in the cautious, GOP-led investigations.
They also requested an immediate public hearing with Comey and copies of all of Comey's memos and records relating to Trump.
The intensifying drama comes as Trump is tomorrow set to embark on his first foreign trip, something that had been optimistically viewed by some aides as an opportunity to reset an administration that is now floundering under an inexperienced president.
As the controversy swirled, Trump said in a speech to US Coast Guard Academy graduates in CT he did not get elected "to serve the Washington media or special interests".
The White House denies the allegations.
The White House maintains that the memo is not an accurate portrayal of the conversation between Mr Trump and Mr Comey. That's according to a Comey memo. Trump did not offer any commentary on Twitter and did not directly address the controversies during a commencement address at the Coast Guard Academy, though he delivered a broadside against the forces he sees as working against him. And the Senate Intelligence Committeesent a letter to Comey asking him to appear before them in both closed and open sessions.
The vice president and two spokesmen for the White House said Comey was removed from office on recommendations from Justice Department leaders, who were unhappy with his handling of the Hillary Clinton email investigation in 2016.
Responding to a question, Amash said Wednesday that could be grounds, "if the allegations are true". The week ended with a volley of tweets from the President, including one threatening to release possible secret recordings of his conversations with Comey.
The Wisconsin Republican said he would not "micromanage" investigation and repeatedly said there are three separate ongoing Russian Federation investigations when asked if he thought a special prosecutor is necessary.
Those offenses also include what looks every bit like quid pro quo bribery - in offering favorable treatment to Russian Federation (and other governments that aren't our friends) in return for something Russian Federation might do for him, and in offering a favor to the FBI director, whom Trump described as essentially a job-seeker, in return for assurance that the FBI investigation of Russiagate would exclude Trump himself. And the urgency escalated exponentially with the revelation that former director Comey, whose honesty no one has ever questioned, kept contemporary memos of every Trump intervention in the FBI's investigation of possible collusion between his presidential campaign and Russian Federation. Trump later fired Comey.
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It's striking how many congressional Republicans are concerned about President Donald Trump's behavior of late.
The comments by Maryland Rep. Elijah Cummings came as Democrats sought to force a House vote to establish an independent commission to investigate Donald Trump's ties to Russian Federation.
Ryan told reporters Wednesday that Congress "can't deal with speculation and innuendo".
"There's clearly a lot of politics being played", Ryan said.
Ryan says a House committee has "appropriately" requested a Comey memo describing a February meeting he had with Trump.
Trump's alleged request to Comey about the Flynn investigation came the day after Flynn was forced to resign after misleading the administration about his contact with Russian officials.
"The last thing I'm going to do is pre-judge anything", the Wisconsin Republican said during a news conference at the Republican National Committee.
A series of toughly-worded letters from Chaffetz and Cummings uncovered information in March that Flynn was paid more than $33,000 from RT, the Russian television network branded a propaganda outlet by USA intelligence agencies. Yet U.S. allies and some members of Congress have expressed alarm. The intelligence, reportedly obtained by Israel, was disclosed without Israel's consent, and it was considered so sensitive it was restricted even among USA authorities. "I hope you can let this go", Trump told Comey, according to a memo the director reportedly wrote shortly after meeting with Trump.
The committee's new emphasis comes as Chaffetz's political profile may be waning.
Chaffetz said he has always had strong support from congressional leaders. Regardless, depending on how brazen Trump was in trying to put the Federal Bureau of Investigation under his thumb, and whether or not Trump was stupid enough to record the conversations (and even stupider to not have them erased), Comey will have nailed Trump on obstruction of justice, the same offense that forced Nixon out of office.
There is no suggestion Mr Trump committed a crime as he has the authority to disclose even the most highly classified information at will.
The White House swung into action after the latest revelations and strongly refuted the latest report.