One of the main effects of the Treaty of Versailles in the U.S. was that Many people thought the League of Nations portion of the Treaty of Versailles was unconstitutional.
The Treaty of Versailles:
- Was the peace treaty to end the first World War
- Included a provision to establish a League of Nations which President Wilson wanted to be part of
Many argued that Wilson did not have the power to involve the U.S. in such things because only the Senate could ratify treaties and so the Senate voted not to join the League.
In conclusion, people thought joining the League of Nations was unconstitutional.
Find out more on the Senate refusing to join at https://brainly.com/question/1969130.