Section 417.505 - 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 of this title.(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 of this title; 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.