[quote=Rare]
We'll I tried that with Mexico and you all know how it ended. British tried to get other nations from the Americas to boycott my Conference...
[/quote]

It would be easier to get the European crowd to agree to it though, since Europe has been at war for quite a while and it's hurting everyone. In South America, no one was really affected by Mexico's decision to go and help the allies, so it was kinda silly to try to ban them from the conference.