41 C.F.R. § 105-68.410 May I approve a participant's use of the services of an excluded person?
Title 41 - Public Contracts and Property Management
After entering into a covered transaction with a participant, you as an agency official may not approve a participant's use of an excluded person as a principal under that transaction, unless you obtain an exception under §105–68.120.
Title 41: Public Contracts and Property Management
PART 105–68—GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT)
Subpart D—Responsibilities of GSA Officials Regarding Transactions
§ 105-68.410 May I approve a participant's use of the services of an excluded person?

