He points out that prohibition destroyed the seventh largest industry in the country at the time it was passed, and did nothing but breed criminality and disrespect for law. He then implies that the coming massive government intervention in health care will wreak cataclysmic and unexpected levels of havoc with the 15% of our economy that the health care industry represents.
His argument is best when cast as a pointed reminder that the government is made of fallible human beings who can't be trusted to understand all the implications of the incredibly complicated system they are attempting to administer, and less when cast as some sort of direct analogy.
I fear most of the population will not get it. Or maybe I'm stupid...
edit: Also, was his reference to eugenicists some sort of passive-aggressive dig against people who are pro-choice and want abortions covered in the health bill? If so, all the more reason this is an awful article.