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House Intelligence Committee Chairman Rep. Devin Nunes, R-Calif. is pursued by reporters as he arrives for a weekly meeting of the Republican Conference with House Speaker Paul Ryan and the GOP leadership, Tuesday, March 28, 2017, on Capitol Hill in Washington. Nunes is facing growing calls to step away from the panel's Russia investigation as revelations about a secret source meeting on White House grounds raised questions about his and the panel's independence. (AP Photo/J. Scott Applewhite)
House Intelligence Committee Chairman Rep. Devin Nunes, R-Calif. is pursued by reporters as he arrives for a weekly meeting of the Republican Conference with House Speaker Paul Ryan and the GOP leadership, Tuesday, March 28, 2017, on Capitol Hill in Washington. Nunes is facing growing calls to step away from the panel's Russia investigation as revelations about a secret source meeting on White House grounds raised questions about his and the panel's independence. (AP Photo/J. Scott Applewhite)

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    Who is Devin Nunes?

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Who is Devin Nunes?

CNN's Randi Kaye gives a closer look at House Intelligence Committee chairman Devin Nunes, who until recently was a relatively unknown member of Congress.

Who is Devin Nunes?

CNN's Randi Kaye gives a closer look at House Intelligence Committee chairman Devin Nunes, who until recently was a relatively unknown member of Congress.