Republican Sen. Marco Rubio of Florida, a member of that committee, said he wants to press Comey as to whether he ever believed the White House was interfering with his work, in light of a spate of news reports that Comey had kept detailed records of his interactions with Trump.
In Sunday show appearances, both Republican and Democratic lawmakers said they will press Comey in hearings as to whether he ever felt that Trump tried to interfere with his Federal Bureau of Investigation work.
Chaffetz said he expects to speak with Comey on Monday and that if there are any notes of White House meetings, "we're certainly pursuing them".
Flynn, a retired Army lieutenant general, was sacked from his position as Trump's national security adviser in February.
Nevertheless, Mark Warner of Virginia, the top Democrat on the Senate intelligence committee, said Coats and NSA director Mike Rogers should provide explanations.
Sens. Richard Burr of North Carolina and Mark Warner of Virginia say they are disappointed that Flynn has chose to ignore the committee's subpoena. It has not denied the Times report that Trump was critical of Comey to the Russians the day after he fired him.
Flynn has been at the center of the allegations of Trump campaign collusion with Russian efforts to interfere in last year's presidential elections.
Flynn, interviewed as part of the clearance renewal process, said that all of his foreign trips as a private citizen "were funded by U.S. companies", according to excerpts of a March 14, 2016 report compiled by security clearance investigators. Cummings says the actual source of the funds was "the Russian media propaganda arm, RT". "What we are now investigating is a counter-intelligence issue, and it falls squarely within the jurisdiction of the committee", he said, adding that the Justice Department is looking into any criminal issues.
As Brennan answers House lawmakers' questions in open and closed sessions, the Senate Armed Services Committee will hear from Trump's top intelligence official, Dan Coats, and the director of the Defense Intelligence Agency regarding national security threats.
Big game hunter crushed by elephant
Botha is survived by his wife Carika and their five children. "A legend has fallen but will never be forgotten", one user wrote. Many animal rights groups spoke out against the big-game hunting operations in the area, noting the unnecessary dangers.
Attorneys for Michael Flynn say that a daily "escalating public frenzy against him" and the Justice Department's appointment of a special counsel have created a legally unsafe environment for him to cooperate with a Senate investigation.
National Security Adviser H.R. McMaster, center, arrives for a news conference with President Donald Trump and Colombian President Juan Manuel Santos in the East Room of the White House, Thursday, May 18, 2017, in Washington.
Warner told CNN he was "disappointed" Flynn did not produce the requested documents - and the intel panel was still weighing what other options they had to get them.
In a letter to the Senate Intelligence Committee, Flynn's lawyer Robert Kelner said Monday that he was invoking his constitutional protection against self-incrimination in refusing to comply with their subpoena. "The timeline will depend on the voluntary nature of the individuals we need documents from, that we need to interview".
Burr said Tuesday that "all options are on the table" if Flynn doesn't comply - including possibly holding him in contempt of Congress - but he added that was a long way off from where they are now.
However, Flynn invoked his Fifth Amendment privilege and declined to furnish the panel with relevant documents in his possession.
On another intelligence matter, Brennan said that while he was CIA director he shared classified information with Russian Federation and other nations about threats related to terrorism.
A similar high-profile case in which a person tried to claim the Fifth rather than reveal information to the Senate Intelligence Committee came in 1986 when National Security Council staffer Lieutenant Colonel Oliver North invoked his right in order to avoid testifying about the Iran-Contra scandal.