19.420—May I approve a transaction with an excluded or disqualified person at a lower tier?
If a transaction at a lower tier is subject to
your approval, you as an agency official may not
approve—
(a)
A covered transaction with a person who is
currently excluded, unless you obtain an exception
under § 19.120; or
(b)
A transaction with a person who is
disqualified from that transaction, unless you
obtain a waiver or exception under the statute,
Executive order, or regulation that is the basis
for the person's disqualification.