White House press secretary Sean Spicer defended President Donald Trump's handling of the dismissal of former national security adviser Michael Flynn, taking aim at then-acting Attorney General Sally Yates in the process.
One of those responses, from former Trump foreign policy advisor Carter Page, is publicly known.
Trump defended Flynn, saying he was a "very good person". She said she was not.
Mr Flynn, a retired army lieutenant-general, misled the White House about discussing United States sanctions against Russian Federation with the country's envoy, Sergei Kislyak, before Donald Trump's inauguration in January.
He described that 11-day period between the White House seeing the materials and Flynn being fired as a time dedicated to "an element of due process" during which they reviewed "the situation".
The February resignation followed media reports that Flynn had discussed USA -imposed sanctions on Russian Federation with Ambassador Sergey Kislyak during the presidential transition period, which was contrary to the public representations of the White House.
"I think the most severe would be a subpoena", he said.
Yates was also questioned, primarily by Republicans, about her decision not to enforce Trump's travel ban, which ultimately resulted in Trump firing her.
A USA official told CBS News Wednesday that Comey had approached Rosenstein last week, asking for more resources to look into any ties between Russian Federation and the president's campaign. Flynn served under Obama as defense intelligence chief before Obama dismissed him.
The Associated Press meanwhile reported last week that one sign taken as a warning by Obama administration officials about Flynn's contacts with Kislyak was a request by a member of Trump's own transition team made to national security officials in the Obama White House for the classified Central Intelligence Agency profile of Kislyak.
The AP interviewed multiple former US officials, most of whom spoke on the condition of anonymity in order to discuss sensitive national security information.
Comey has been invited to appear before the Senate Intelligence Committee next Tuesday but he has not yet confirmed if he will attend.
Congressional investigators have also accused Flynn of possibly breaking the law by not properly disclosing a $45,000 payment for an appearance he made at an event in Moscow to celebrate Russia Today.
The committee, led by Sens.