Export of arms to American countries. Whenever the President shall find that in any American country conditions of domestic violence exist which are promoted by the use of arms or munitions of war procured from the United States, and shall make proclamation thereof, it shall be unlawful to export except under such limitations and exceptions as the President shall prescribe any arms or munitions of war from any place in the United States to such country until otherwise ordered by the President or by Congress. Any shipment of material hereby declared unlawful after such a proclamation shall be punishable by fine not exceeding ten thousand dollars, or imprisonment not exceeding two years, or both. (Apr. 22, 1898; Mar. 14, 1912; sec. 2.) Mines, torpedoes, and harbor defenses. Whoever shall willfully trespass upon, injure, or destroy any of the works or property or material of any submarine mine or torpedo, or fortification or harbor-defense system owned or constructed or in process of construction by the United States, or shall willfully interfere with the operation or use of any such submarine mine, torpedo, fortification, or harbor-defense system, shall be fined not more than five thousand dollars, or imprisoned not more than five years, or both. [See also act Mar. 4, 1909, sec. 272, p. 468.] (Mar. 4, 1909; sec. 44; Repeals act July 7, 1898.) Sale of arms and liquors to Pacific islanders. Whoever, being subject to the authority of the United States, shall give, sell, or otherwise supply any arms, ammunition, explosive substance, intoxicating liquor, or opium to any aboriginal native of any of the Pacific islands lying within the twentieth parallel of north latitude and the fortieth parallel of south latitude, and the one hundred and twentieth meridian of longitude west and one hundred and twentieth meridian of longitude east of Greenwich, not being in the possession or under the protection of any civilized power, shall be fined not more than fifty dollars, or imprisoned not more than three months, or both. In addition to such punishment, all articles of a similar nature to those in respect to which an offense has been committed, found in the possession of the offender, may be declared forfeited. If it shall appear to the court that such opium, wine, or spirits have been given bona fide for medical purposes, it shall be lawful for the court to dismiss the charge. (Mar. 4, 1909; sec. 308; Repeals act Feb. 14, 1902, secs. 1-2.) All offenses against the provisions of the section last preceding, committed on any of said islands or on the waters, rocks, or keys adjacent thereto, shall be deemed committed on the high seas on board a merchant ship or vessel belonging to the United States, and the courts of the United States shall have jurisdiction accordingly. (Mar. 4, 1909; sec. 309; Repeals act Feb. 14, 1902, sec. 3.) Exemption of private property at sea.