to navigate neutrality in World War I for about three years, and to win 1916 reelection with the slogan "He kept us out of war." The neutrality policy was supported by the tradition of shunning foreign entanglements, and by the large population of immigrants from Europe with divided loyalties in the conflict. America did enter the war in April 1917, however. Congress voted to declare war on Germany, 373 to 50 in the House of Representatives and 82 to 6 in the Senate. Technically the US joined the side of the Triple Entente only as an "associated power" fighting the same enemy, not as officially allied with the Entente. A few months after the declaration of war, Wilson gave a speech to Congress outlining his aims for conclusion of the conflict, labeled the Fourteen Points. That American proclamation was less triumphalist than the stated aims of some other belligerents, and its final point proposed that a "general association of nations must be formed under specific covenants for the purpose of affording mutual guarantees of political independence and territorial integrity to great and small states alike." After the war, Wilson traveled to Europe and remained there for months to labor on the post-war treaty, longer than any previous Presidential sojourn outside the country. In that Treaty of Versailles, Wilson's "general association of nations" was formulated as the League of Nations. Isolationism between the World Wars In the wake of the First World War, the non-interventionist tendencies gained ascendancy. The Treaty of Versailles, and thus, United States' participation in the League of Nations, even with reservations, was rejected by the Senate in the final months of Wilson's presidency. Republican Senate leader Henry Cabot Lodge supported the Treaty with reservations to be sure Congress had final authority on sending the U.S. into war. Wilson and his Democratic supporters rejected the Lodge Reservations, The strongest opposition to American entry into the League of Nations came from the Senate where a tight-knit faction known as the Irreconcilables, led by William Borah and George Norris, had great objections regarding the clauses of the treaty which compelled America to come to the defense of other nations. Senator William Borah, of Idaho, declared that it would "purchase peace at the cost of any part of our [American] independence." Senator Hiram Johnson, of California, denounced the League of Nations as a "gigantic war trust." While some of the sentiment