41 C.F.R. § 105-68.305 May I enter into a covered transaction with an excluded or disqualified person?
Title 41 - Public Contracts and Property Management
(a) You as a participant may not enter into a covered transaction with an excluded person, unless the General Services Administration grants an exception under §105–68.120. (b) You may not enter into any transaction with a person who is disqualified from that transaction, unless you have obtained an exception under the disqualifying statute, Executive order, or regulation.
Title 41: Public Contracts and Property Management
PART 105–68—GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT)
Subpart C—Responsibilities of Participants Regarding Transactions
Doing Business With Other Persons
§ 105-68.305 May I enter into a covered transaction with an excluded or disqualified person?

