Apparently the 5th Congress (yes, fifth, in 1798) thought that the U.S. government had the right to mandate healthcare and collect money to pay for it (as well as subsidize it to some extent). There are several articles about this: the first one is by Rick Ungar in Forbes Magazine and the second by
Greg Sargent in The Washington Post. (They each reference the other.)
Someone tell the Republicans, the Tea Screamers, and Justice Scalia about this.
(Thanks to Merrill Goozner of GoozNews.com for pointing out the Ungar piece.)