[quote=Pasta Sentient]
Banning Mexico from -all- conferences is a little harsh. Also...you are not painting yourself in a favorable light to the Nations of Europe. Stating that an alliance with European countries bans you from diplomacy in America essentially turns all European nations against you.
[/quote]

Well, not all of Europe, only the signers of the Alliance with Mexico (France and Britian). And Mexico might be only ban for the Pan-America Conferences.