President Trump Release

[Wallfire]

So, who is the whistle-blower?  Some were speculating is was Shifty Shit himself, but this report states he is CIA.

Whistle-Blower Is a C.I.A. Officer Who Was Detailed to the White House

If it is a CIA Officer, I thought that the agency wasn't allowed to do this kind of work within the US?
Even of he is detailed to the White House, wouldn't this be construed as political meddling by an unknown
agent who's mandate is not to interfere with 'in-house' workings of US Government?

I would not be so sure about that, during the "troubles" in N Ireland both MI5 ( domestic) and MI6 ( over seas ) were very much involved.