29 CFR 1471.425: When do I check to see if a person is excluded or disqualified?

As an agency official, you must check to see if a person is excluded or disqualified before you—

(a) Enter into a primary tier covered transaction;

(b) Approve a principal in a primary tier covered transaction;

(c) Approve a lower tier participant if agency approval of the lower tier participant is required; or

(d) Approve a principal in connection with a lower tier transaction if agency approval of the principal is required.