Although US President Woodrow Wilson was re-elected in 1916 under the slogan "He kept us out of the war", at the start of his second term he decided that Germany's continued deployment of unrestricted submarine warfare was sufficient cause for the US to enter World War I. Shortly afterward, Congress passed the Selective Service Act of 1917, which required all males aged 21–30 to register for military conscription. Goldman saw the decision as an exercise in militarist aggression, driven by capitalism. She declared in Mother Earth her intent to resist conscription, and to oppose US involvement in the war.[97]