United States involvement in the Mexican Revolution with its diplomatic and economic rivals in Mexico, particularly Great Britain and Germany, meant that foreign powers affected the way the Mexican situation played out. When U.S. agents discovered that the German merchant ship, the "Ypiranga", was carrying arms to Huerta's regime, President Wilson ordered troops to the port of Veracruz to stop the ship from docking. The U.S. did not declare war on Mexico city but the U.S. troops carried out a skirmish against Huerta's forces in Veracruz. The "Ypiranga" managed to dock at another port, which infuriated Wilson. On April 9, 1914, Mexican officials in the port of
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