 Complete the following phrase:  At the outbreak of World War I in 1914, the U.S. declared neutrality as Wilson tried to negotiate a peace between the Allied and Central Powers. He narrowly won re-election in the 1916 United States presidential election, boasting how he kept the nation out of wars in Europe and Mexico. In April 1917, Wilson asked Congress for a declaration of war against Germany in response to its policy of unrestricted submarine warfare that sank American merchant ships. Wilson nominally presided over war-time mobilization and left military matters to the generals. He instead concentrated on diplomacy, issuing the Fourteen Points that the Allies and Germany accepted as a basis for post-war peace. He wanted the off-year elections of 1918 to be a referendum endorsing his policies, but instead the Republicans took control of Congress. After the 