When Admiral Rogers was the director of NSA, he intercepted the Cabal surveilling Trump and his campaign. He went to meet Trump directly, and took in into a SCIF. After that meeting, Trump changed his campaign HQ. Piecing together the SpyGate from later on it becomes clear that Obama and co were using FISA to spy on Trump, and Rogers became alarmed learning this and tipped off Trump.

Thats also when the Cabal realised that NSA was outside their control.

Also notable that Snowden, who used to be a CIA asset, suddenly become a "contractor" in NSA, and then he blew whistle on the NSA surveilling people - but he never complained about CIA doing the same thing. Q called him out multiple times as a puppet used by the Cabal to try and stop the NSA from snooping on them.