Just a question here: Would the individual mandate be less controversial if a Medicare-style public option had not been dumped early in the legislative process? Suppose the government could say "We will enroll you in the public option plan and bill you for the premiums unless you enroll in a private plan of your choice." This wouldn't be much different from requiring everyone to contribute to Social Security, except that there is no option to be excluded from SS. Personally, I support a national single-payer system like Canada's, the UK's, etc., but even I am queasy about people being forced to buy a commercial product from profit-oriented private companies.
