Devin Nunes, head of the House of Representatives intelligence committee, made the remark on Fox News.
On Monday, FBI Director James Comey will testify before the committee.
BBC: Nunes says no evidence Trump colluded with Russia during the US election
Rep. Adam Schiff (R) (D-CA), ranking member of the House Permanent Select Committee on Intelligence, and Devin Nunes (L) (R-CA), the chairman of the House Permanent Select Committee on Intelligence, answer questions at the U.S. Capitol during a press conference March 2, in Washington, DC
