Many Senators did not share Wilson’s enthusiasm for the treaty, especially the League of Nations.
Wilson, a democrat, was faced with the problem that the Senate was controlled by Republicans, many of whom did not like the fact that the treaty would give the League of Nations some of the powers that normally belonged to the U.S. Senate, especially the power to send U.S. troops into battle. It didn’t help Wilson’s cause that he had campaigned against many of these Republicans in the bitter mid-term campaigns of 1916.
Some Republican Senators, had only mild concerns about the League, and would probably accept treaty with minor changes. This group was called the