45 C.F.R. § 1226.9
(a) A volunteer may draft, review, testify or make representations to a legislative body regarding a legislative measure upon request of the legislative body, a committee, or a member thereof, provided that:
(b) The volunteer may draft, review, testify, or make a written representation to a legislative body regarding an authorization or appropriation measure directly affecting the operation of the project or program to which he or she is assigned: Provided: