Why were President Wilson's fourteen points important in WWI?

They were important because they were widely contested and controversial. Wilson's 14 points tried to set up a League of Nations that could be compared to the UN. Even though the European countries accepted this, the US didn't. The 14 points were attached to the Treaty of Versailles. The US legislative branch decided that the League put the US into a police nation and that wasn't the best thing for the country at the time. We didn't sign the Versailles treaty.