34 C.F.R. § 75.525
(a) A grantee may not permit a person to participate in an administrative decision regarding a project if:
(2) The person:
(b) A grantee may not permit any person participating in the project to use his or her position for a purpose that is—or gives the appearance of being—motivated by a desire for a private financial gain for that person or for others.
(Authority: 20 U.S.C. 1221e-3 and 3474)