Egregious shot? Not really. But I tend think their contemporary Samuel Johnson had a point when he said in reference to the Founding Fathers "How is it that we hear the loudest yelps for liberty among the drivers of Negroes?"

I think it would be reasonable, in the light of the fact that large parts of the United States were historically Mexican, for a similar arrangement to exist between the United States and Mexico as does between the United Kingdom and Ireland, allowing citizens of each country to vote in the other if they are resident.