Mexican Revolution revolution was in 1914, during the "Ypiranga" incident. When United States intelligence agents received word that the "Ypiranga", a German merchant ship, contained illegal firepower for Huerta, President Wilson ordered American troops to the port of Veracruz to stop the ship from docking. Wilson never actually declared war on Mexico. The United States skirmished with Huerta's troops in Veracruz. The "Ypiranga" successfully docked at another port and unloaded the arms, which greatly angered Wilson. The ABC Powers arbitrated and U.S. troops left Mexican soil, but the incident added to already tense Mexican-American relations. In 1916, in retaliation for Pancho Villa's
German interest in the Caribbean President Theodore Roosevelt forced the Germans to back down by sending his own fleet and threatening war if the Germans landed. By 1904 German naval strategists had turned their attention to Mexico where they hoped to establish a naval base in a Mexican port on the Caribbean. They dropped that plan. In 1917 they proposed a military alliance in a war against the United States in the Zimmermann Telegram, which accelerated American entry into World War I. German interest in the Caribbean German interest in the Caribbean was a series of unsuccessful proposals made by the Imperial German Navy (Kaiserliche