enclave. See Act of Sept. 1, 1916, Pub. L. No. 64-250, 39 Stat. 676, 693 (giving “nearest United States commissioner for the District of Maryland” jurisdiction to try and sentence defendants for moving-vehicle offenses committed on Con duit Road, now called MacArthur Boulevard, when prescribed punishment did not exceed a fine of $40). 11 . The exception can also apply to crimes arising on American ships on the high seas or in foreign waters, at least when Congress has expressly given admiralty jurisdiction to a nearby legislative court. Compare id. at 74 n. 27, 102 S.Ct. 2858 (explaining that the Court had recognized Congress’s power to confer admiralty jurisdiction on "administrative tribunals”), with United States v. Flores, 289 U.S. 137, 149-150, 53 S.Ct. 580, 77 L.Ed. 1086 (1933) (<HOLDING>). 12 . See 28 U.S.C. § 631(a) (authorizing
holding inter alia that a united states court retains jurisdiction over persons arrested on a foreign ship beyond the us navigable waters when said arrest violates a treaty to which the united states and the foreign country are parties holding that united states admiralty jurisdiction extended not only to the high seas but also to american vessels in foreign waters holding statute assessing duties on costs of foreign repairs done to united states vessels to be constitutional holding nlra applied to state bank of indias activities in the united states because most employees are american citizens or american residents and the labor dispute centers on the wages to be paid american residents foreign or natural  holding that courts apply substantive admiralty law to claims that sound in admiralty regardless of whether the complaint invokes diversity or admiralty jurisdiction