MARC THIESSEN (FOX NEWS CONTRIBUTOR): It is not just Adam Schiff, it is a whole host of people who abuse their positions as members of the -- quite frankly, President Trump withdrew John Brennan's security clearance. I think he should look at withdrawing security clearances for members of Congress who have access to that intelligence and openly lie to the American people about what's in that intelligence. 

Related: 

After calls from right-wing media, Trump considers revoking the clearances of several former US officials

Fox & Friends applauds Trump's revocation of former CIA Dir. Brennan's security clearance: “Oh, it's payback”

Tucker Carlson takes credit for Trump revoking John Brennan's security clearance