1616. Investigative Responsibility -- 18 U.S.C. §112, 878, 970, 1116, 1117 And 1201

1. FBI - Responsibility for the Federal investigation of all violations of protection of foreign officials, internationally protected persons (IPP) and official guests statutes (18 U.S.C. §§ 112,878,970,1116,1117 and 1201) has been assigned to the Federal Bureau of Investigation (FBI).
2. Treasury Department - The assignment of investigative jurisdiction to the FBI over crimes against foreign officials, internationally protected persons and official guests does not limit the power of the Secretary of the Treasury in the discharge of his/her statutory protective responsibilities. See 3 U.S.C. § 202; 18 U.S.C. § 3056.

[cited in USAM 9-65.800]