McMasters' loyalty lie with the prior presidential administration. honestly I'm just being lazy and not wanting to dig up original sauce but I know it was covered thoroughly phora. by Breitbart. back when bannon was still in the administration it was thought by people at Breitbart paying attention 2 affairs at Pennsylvania avenue that McMasters was one team to oversee a purge of Trump loyalists on the sly from within. it was also purported by same source that McMasters was likely the source or at least had tacit knowledge of leaks from the administration when it was being all civ like. e.g. connections to susan Rice. finally what Obama administration carryovers remained that McMasters was aware of received protection from scrutiny on his watch. in short McMasters was totally on inside saboteur before most of us that were aware of fisa matters.