Trump revoked John Brennan's security clearance. Should have been the moment Trump became President. Now, anything Brennan leaks of a classified nature could get his butt in a ringer...assuming there is someone in DOJ with the balls to prosecute. Thus far that person hasn't identified themselves.
https://www.politico.com/story/2018...y-clearance-of-ex-cia-director-brennan-778791
https://www.politico.com/story/2018...y-clearance-of-ex-cia-director-brennan-778791