Of these three, only Enrolled Agents have been subject to the direct oversight of the IRS Office of Professional Responsibility as to their return preparation practice, testing and mandatory Continuing Professional Education (CPE).
While U.S. administrations going back to the Eisenhower era have given lip service to the goal of a negotiated ban on all nuclear testing, in practice they proceeded cautiously in trying to achieve this goal.
The FAA has used designated company employees to oversee and validate some safety testing for more than two decades, a practice critics complain has inherent conflicts of interest.