With the exceptions stated in §§105-68.120, 105-68.315, and 105-68.420, a person who is excluded by the General Services Administration or any other Federal agency may not:

(a) Be a participant in a(n) GSA 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.