31 C.F.R. § 585.209 Prohibited performance of contracts.
Title 31 - Money and Finance: Treasury
Except as otherwise authorized, no U.S. person may perform any contract, including a financing contract, in support of an industrial, commercial, public utility, or governmental project in the FRY (S&M).
Title 31: Money and Finance: Treasury
PART 585—FEDERAL REPUBLIC OF YUGOSLAVIA (SERBIA AND MONTENEGRO) AND BOSNIAN SERB-CONTROLLED AREAS OF THE REPUBLIC OF BOSNIA AND HERZEGOVINA SANCTIONS REGULATIONS
Subpart B—Prohibitions
§ 585.209 Prohibited performance of contracts.

