Which group opposed any treaty ending ww1 that had a league of nations folded into it?

The group that opposed any treaty ending World War I that included the League of Nations was known as the "Irreconcilables." This faction consisted of a group of U.S. senators who were staunchly against U.S. participation in the League, fearing it would undermine American sovereignty and entangle the nation in international conflicts. Led by figures like Senator William Borah, the Irreconcilables rejected the Treaty of Versailles on these grounds.