They belived that the United States should stay out of European affairs
Americans opposed joining the League of Nations because they didn't want America to be involved with other countries' affairs.
The other nations lost some confidence in the league
The U.S not joining.
League of Nations
President Woodrow Wilson tried to get Congress to approve the US entry into the League of Nations. The League of Nations was the predecessor to the United Nations.
Disbanding the League of Nations.
Could not get congressional approval
Although US President Woodrow Wilson had joined with other world leaders in the proposal to create the League of Nations, he had not carefully gaged American opinion on the matter. The US Senate rejected the idea of joining and most Americans agreed with that decision. The Senate and many Americans sought a more isolationist path to foreign policy.
Americans opposed joining the League of Nations because they didn't want America to be involved with other countries' affairs.
The Senate
Woodrow Wilson
joining the league of nations