19 C.F.R. § 111.41 Endorsement of checks.
Title 19 - Customs Duties
A broker must not endorse or accept, without authority of his client, any U.S. Government draft, check, or warrant drawn to the order of the client.
Title 19: Customs Duties
PART 111—CUSTOMS BROKERS
Subpart C—Duties and Responsibilities of Customs Brokers
§ 111.41 Endorsement of checks.