Section 180.505 - Who uses SAM Exclusions?(a) Federal agency officials use SAM Exclusions to determine whether to enter into a transaction with a person, as required under § 180.430 .(b) Participants also may, but are not required to, use SAM Exclusions to determine if - (1) Principals of their transactions are excluded or disqualified, as required under § 180.320 ; or(2) Persons with whom they are entering into covered transactions at the next lower tier are excluded or disqualified.(c) Sam Exclusions are available to the general public.70 FR 51865, Aug. 31, 2005, as amended at 79 FR 75879, Dec. 19, 2014