Yes, you as a participant are responsible for determining whether any of your principals of your covered transactions is excluded or disqualified from participating in the transaction.
You may decide the method and frequency by which you do so. You may, but you are not required to, check SAM Exclusions.
authority: Pub. L. 109-282;
31 U.S.C. 6102,
Sec. 2455, Pub. L. 103-355, 108 Stat. 3327; E.O. 12549, 3 CFR, 1986 Comp., p. 189; E.O. 12689, 3 CFR, 1989 Comp., p. 235
source: 70 FR 51865, Aug. 31, 2005, unless otherwise noted.
cite as: 2 CFR 180.320