Why did Wilson refuse to compromise with the critics of the league of nations?

Despite all Woodrow Wilson's efforts in establishing the League of Nations, the USA did not join the League because of objections raised in the Senate, especially from Republican politicians William E Borah and mainly Henry Cabot Lodge, and Wilson's refusal to compromise ensured that the US would not ratify the Covenant of The League of Nations and the Treaty of Versailles.

Joining the League of Nations would be like signing a blank cheque - America didn't want to have to ship its troops half way across the world for disputes that didn't concern them. It didn't want to risk its economy or any more American lives after the losses of WW1. The Republicans wanted to return to Isolationism - being an independent country and not involving itself in other countries affairs.

America also strongly disagreed with the Treaty of Versailles. Many Germans lived in America and Americans felt it was far too harsh. One of the Leagues aims was to uphold the Treaty of Versailles which made some Americans very averse to joining the League.

I got this from another answer at his link: Why_didn't_the_United_States_of_America_join_the_League_of_Nations