Warner: Revoking Brennan's clearance 'a dangerous precedent'
![Warner: Revoking Brennan's clearance 'a dangerous precedent'](http://thehill.com/sites/default/files/styles/promo/public/warner_mark_012518_getty.jpg?itok=fridHVRt)
Sen. Mark Warner (Va.), the senior Democrat on the Senate Intelligence Committee, on Wednesday slammed President Trump for setting “a dangerous precedent” by revoking the security clearance of former CIA Director John Brennan, who is a frequent...