What Obama is trying to do in "transforming America" is to crash our current constitutional system and our capitalist system. The author thinks that this transformation will play out in the context of an America of 250 years of constitutional governance but he should think of the transformation occurring in the context of a banana republic for that is what Obama is trying to contrive. In the context of a banana republic it is easy to imagine the emergence of Hugo Chavez, Evo Morales, or Juan Peron, not to mention a fellow named Fidel Castro.
No, the Democrat party is not doomed, it has already transformed itself into a vehicle which would not just welcome but facilitate the kind of transformation which is easily imaginable in a banana republic and it will do so by precipitating financial chaos and race politics.
