If you have a CIA employee who is gathering HUMINT (Human Intelligence) against the President and White House...then you have a serious problem. In most countries, he would have been apprehended and charged with treason.
You might as well ask the guy...are you collecting also against Senators and House members? At that point, the congressional people will all freak out because it opens up a bigger mess.
And of course the question of who they are working for. Getting Trump impeached would be very popular with many enemies of America.
Where’s the whistle blower asking for the secret harassment fund names to be revealed?