The California Republican said his committee sent a letter requesting classified information regarding its probe into FISA abuses and counterintelligence investigations, including the targeting of Americans like former Trump campaign official Carter Page, but it was ignored.

After attempting to subpoena the classified information last week, Mr. Nunes discovered the Justice Department will not comply.

“We have to move quickly to hold the Attorney General of the United States in contempt and that’s what I want to press for this week,” Mr. Nunes told Fox News on Sunday.