"[156] In early 1916, Pancho Villa raided the village of Columbus, New Mexico, killing or wounding dozens of Americans and causing an enormous nationwide American demand for his punishment. Wilson ordered General John J. Pershing and 4,000 troops across the border to capture Villa. By April, Pershing's forces had broken up and dispersed Villa's bands, but Villa remained on the loose and Pershing continued his pursuit deep into Mexico. Carranza then pivoted against the Americans and accused them of a punitive invasion, leading to several incidents that nearly led to war. Tensions subsided after Mexico agreed to release several American prisoners, and bilateral negotiations began under the auspices of the Mexican-American Joint High Commission. Eager to withdraw from Mexico due to tensions in Europe, Wilson ordered Pershing to withdraw, and the last American soldiers left in February 1917.[157]

Neutrality in World War I
Wilson and "Jingo", the American War Dog. The editorial cartoon ridicules jingoes baying for war.
World War I broke out in July 1914, pitting the Central Powers (Germany, Austria-Hungary, the Ottoman Empire, and later Bulgaria) against the Allied Powers (Britain, France, Russia, Serbia, and several other countries). 