FBI Director James Comey, days before President Donald Trump fired him, told lawmakers he sought more resources for his agency's probe into possible collusion between Trump's presidential campaign and Russia to sway the 2016 U.S. election, a congressional source said on Wednesday. With the Republican president facing a storm of criticism from many Democratic lawmakers and some in his own party, the Trump administration accused Comey of "atrocities" on the job and denied his firing was related to the FBI's Russia investigation. Trump, who met Russia's foreign minister at the White House on Wednesday, lashed out at critics, calling Democrats "phony hypocrites," and defended his decision to abruptly oust Comey on Tuesday from the law enforcement post he held since 2013.

Mark R. Warner (D-VA), Vice Chair of the Senate Select Committee on Intelligence, greets FBI Director James Comey, Director of National Intelligence James Clapper and Central Intelligence Agency Director John Brennan (L-R) before they testify before the Senate (Select) Intelligence Committee in the Dirksen Senate Office Building on Capitol Hill January 10, 2017 in Washington, DC. Getty Images

In a farewell letter to staff confirmed by NBC, Comey, who was appointed by Trump's predecessor, Democratic President Barack Obama, said he had "long believed that a president can fire an FBI director for any reason, or for no reason at all." Comey added he would not spend time dwelling on Trump's decision "or the way it was executed." "My hope is that you will continue to live our values and the mission of protecting the American people and upholding the Constitution," Comey said in the letter. "If you do that, you too will be sad when you leave, and the American people will be safer." But Democrats ramped up accusations that Comey's removal was intended to undermine the Federal Bureau of Investigation probe and demanded an independent investigation into the alleged Russian meddling, with some calling the firing an attempt to cover up wrongdoing related to Russia. A congressional source with knowledge of the matter said Comey told lawmakers within the past few days he had asked the Justice Department to make additional resources available - mainly more staffing - for the Russia probe. Comey informed lawmakers of that request after the Senate Intelligence Committee, conducting its own investigation, had asked the FBI to speed up its Russia inquiry, the source said. Democrat Dianne Feinstein, the Senate Judiciary Committee's top Democrat, told reporters she understood Comey was seeking more resources for the FBI investigation. Responding to media reports that Comey had asked Deputy Attorney General Rod Rosenstein last week for a significant boost in resources for the agency's probe, Justice Department spokesman Ian Prior said in an email: "Totally false." U.S. intelligence agencies concluded in a January report that Russian President Vladimir Putin had ordered an effort to disrupt the 2016 election that included hacking into Democratic Party emails and leaking them, with the aim of helping Trump. Russia has denied any such meddling. The Trump administration denies allegations of collusion with Russia.

'WASN'T DOING A GOOD JOB' Top U.S. Republicans rallied to Trump's defense, but some called the action troubling. Republican House Oversight Committee Chairman Jason Chaffetz said in a statement on Wednesday he had requested a review by the Department of Justice's inspector general of Trump's decision to fire Comey, who had more than six years left in his 10-year post. Comey's dismissal stunned Washington and plunged Trump deeper into a controversy over his campaign's alleged ties with Russia that has dogged the early days of his presidency, while also threatening to hinder his policy goals. "He wasn't doing a good job, very simply," the Republican president said of Comey during a meeting with former Secretary of State Henry Kissinger in the White House Oval Office. The administration said on Tuesday that Comey's firing stemmed from his handling of an election-year FBI probe into Democratic presidential nominee Hillary Clinton's use of a private email server during her time as secretary of state. White House officials said Trump's anger at Comey had been building for months but a turning point came when the FBI chief refused to preview for top Trump aides his planned testimony to a May 3 Senate hearing on the Clinton email issue, an act Trump and his aides took it as an act of insubordination. Trump had been considering letting Comey go "since the day he was elected" in November, White House spokeswoman Sarah Huckabee Sanders said. She referred to what she called Comey's "atrocities in circumventing the chain of command" at the Justice Department. Many Democrats have criticized Comey's management of the Clinton investigation, but they questioned the timing of his dismissal, given that Trump could have acted soon after taking office on Jan. 20 and that he has repeatedly criticized the FBI and congressional probes into Russia's role in the election. In a flurry of Twitter posts, Trump said Comey had "lost the confidence of almost everyone in Washington, Republican and Democrat alike." He added, "Dems have been complaining for months & months about Dir. Comey. Now that he has been fired they PRETEND to be aggrieved. Phony hypocrites!" Dems have been complaining for months & months about Dir. Comey. Now that he has been fired they PRETEND to be aggrieved. Phony hypocrites! The Senate minority leader, Democrat Chuck Schumer, said Rosenstein should appoint a special prosecutor. Schumer called on Republican Senate Majority Leader Mitch McConnell to hold closed and potentially classified briefings with all senators to question the top Justice Department officials, Attorney General Jeff Sessions and Rosenstein. "We know Director Comey was leading an investigation (into) whether the Trump campaign colluded with the Russians, a serious offense. Were those investigations getting too close to home for the president?" Schumer said.

PANEL SEEKS COMEY TESTIMONY

McConnell accused Democrats of "complaining about the removal of an FBI director who they themselves repeatedly and sharply criticized" and said a special prosecutor would impede existing probes like one under way in the Senate Intelligence Committee. Paul Ryan, the Republican leader of the House of Representatives, told Fox News in an interview it was "entirely within the president's role and authority" to remove Comey and that a special prosecutor was unnecessary. Mark Warner, the intelligence committee's top Democrat, said he and the panel's Republican chairman, Richard Burr, had asked Comey to testify before the panel in private next Tuesday.