When the senate rejected the treaty of verailles at the end of World War 1 it was?

When the Senate rejected the Treaty of Versailles at the end of World War I, it was primarily due to concerns over the League of Nations and the potential loss of U.S. sovereignty. Many senators, particularly Republicans led by Henry Cabot Lodge, feared that joining the League would obligate the U.S. to engage in foreign conflicts without congressional approval. This rejection reflected deep divisions in U.S. foreign policy and ultimately led to the country not joining the League of Nations. The failure to ratify the treaty also marked a significant shift in America's role in international affairs.