Since our method of communication wasn't very reliable, I couldn't get enough details. So if you see any mistakes, I apologize. I've tried to fit the criteria you've described, and I hope it works for you.
They did not want to join the League of Nations because this would require the U.S. to come to the aid of other nations in the league when they were attacked. Many senators worried that this provision would drag the U.S. into unnecessary foreign conflict.
It dosent say anything....