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

1. (a) Enter into a primary tier covered transaction;
2. (b) Approve a principal in a primary tier covered transaction;
3. (c) Approve a lower tier participant if agency approval of the lower tier participant is required; or
4. (d) Approve a principal in connection with a lower tier transaction if agency approval of the principal is required.