Section 180.505 - Who uses SAM.gov Exclusions?(a) Federal agency officials use SAM.gov 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.gov 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) The SAM.gov Exclusions are available to the general public.