The action to issue the unmasking subpoenas "would have been taken without the Minority's agreement".
Former White House National Security Adviser Michael Flynn has agreed to hand over some of the subpoenaed records requested by the Senate Select Committee on Intelligence pursuant to its Russian Federation probe, theAssociated Press reported Tuesday.
The committee's statement, released by Chairman Rep. Mike Conaway and ranking member Rep. Adam Schiff, said that the subpoenas were for "testimony, personal documents and business records".
It is possible that the Trump White House could try to raise executive privilege claims in arguing that any conversations with the president could not be discussed publicly.
Flynn's decision Tuesday came as President Donald Trump's personal attorney, Michael Cohen, rejected a House intelligence committee request for information, and former White House staffer Boris Epshteyn confirmed he has been contacted for information as part of the House investigation.
The subpoenas related to the committee's unmasking investigation were issued by Nunes alone.
Earlier, Flynn had refused to cooperate with a broader subpoena that included his personal documents, citing his Fifth Amendment right against self-incrimination.
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Flynn was sacked by Trump in February after revelations that he misled administration officials about his contacts with Russia's ambassador.
A senior committee aide said any subpoenas related to unmasking were not part of the Russian Federation probe run by Conaway and Schiff.
Democrats say Comey's dismissal was aimed at hindering the FBI's Russian Federation investigation, which has since been taken over by a special counsel, Robert Mueller, himself a former FBI director. The three didn't personally receive subpoenas, the people familiar with the matte said.
Schiff told reporters last week that the committee was preparing to subpoena Flynn after he declined to voluntarily turn over documents requested by congressional investigators.
Earlier this month, a New York Times report emerged that Mr. Trump's aides knew Flynn was under investigation well before the president's inauguration.
The three subpoenas - to the CIA, the FBI and the National Security Agency - suggested Nunes was moving independently of the panel's main investigation into Russian meddling and focusing instead on an issue that the White House preferred.
The Guardian newspaper said on Thursday said that Nigel Farage, a Trump supporter and a leading Brexit campaigner, is a "person of interest" in the Federal Bureau of Investigation probe but has not been accused of wrongdoing.
It was reported in March that he met with Kislyak twice during the campaign, once at the Republican National Convention in July and once in his Senate office in September. Of the two, only Canadian Prime Minister Justin Trudeau has taken advantage of the offer so far, the officials said.