With the exceptions stated in Sec. Sec. 19.120, 19.315, and 19.420, a person who is excluded by the Department of the Treasury or any other Federal agency may not:
(a) Be a participant in a(n) Department of the Treasury 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.