There's a curious justice about having the secret weapons of the US turned on its own citizens; said citizens did not seem to care, at all, when the foreigners were the targets. Such weapons were called necessary when directed outwards.
Did anybody ever do a weapons check to make sure they were not pointed at us before they went off? Look at what we have.
FISA court routinely spying on Americans without a warrant.
Allies who routinely spy on Americans at US request, and vice versa.
Agitprop psyops run on the American people through the media.
Hell, they even turned the FBI from a law enforcement agency to a domestic/international intelligence operation.
Did anyone really believe it was not possible?