You mean something equivalent to the White House Plumbers? Hard to say given that the current admin seems to act a bit like a sieve although trump is trying to get rod of every single person who would side with Ukraine and also side against him in every shape or form. Fascism moves in dribs and drabs.
Thinking more Iran (Shah, not 1979), South Vietnam, and Chile. The South Vietnamese plan was apparently a pet project of some people in the Kennedy administration that was passionately opposed by others in the Kennedy administration, but they won the day.