What was congress justification for not joining the league of nations?

Congress's justification for not joining the League of Nations primarily revolved around concerns over national sovereignty and the potential for entanglement in foreign conflicts. Many lawmakers feared that membership could obligate the United States to intervene in international disputes, undermining the country's ability to make independent foreign policy decisions. Additionally, there was significant opposition from isolationist factions, who believed that joining the League would detract from domestic priorities and entangle the nation in global politics. Ultimately, these concerns led to the Senate's refusal to ratify the Treaty of Versailles, which included the League's establishment.