Mr Caplan's screed was exactly what the audience herein demanded, apparently. It must be nice to live in a country protected by the nation he so clearly loathes. 

To address the United States' horrid behavior towards Latin America, he should have proposed that a morally superior Canada -- as opposed to the repugnant United States -- step up to the plate and nurture liberty throughout Latin America. You clearly have the means and the self-assessed moral authority to do so. You can start with Cuba.