What are two primary arguments of the Anti-Imperialist League?

The League opposed the Paris Peace Treaty, by which the Philippines and Puerto Rico passed into the possession of the United States, and after the approval of the treaty in February 1899, called for an end to American intervention in the Philippines, advocating independence for the archipelago.

Moreover, the League condemned US imperialist expansion, "predatory" nature of the US foreign policy. Thus, one of the ideologists of the League was the famous writer Mark Twain. Anti-imperialists have declared themselves defenders of America's traditional democratic values, declaring their intention to unite all those who disagree with the republic's attempts to rule an empire scattered in distant parts of the world