With the exceptions stated in §§919.120, 919.315, and 919.420, a person who is excluded by the OPM or any other Federal agency may not:

(a) Be a participant in a(n) OPM transaction that is a covered transaction under subpart B of this part;

(b) Be a participant in a transaction of any other Federal agency that is a covered transaction under that agency's regulation for debarment and suspension; or

(c) Act as a principal of a person participating in one of those covered transactions.