Apparently, according to the Cato Institute, "the results of a new USA Today/Gallup poll: 72% of Americans (including 56% of Democrats and 54% of those who think “the healthcare law is a good thing”) think the individual mandate is unconstitutional. This follows a Rasmussen poll showing that a majority of Americans favor repeal and an AP poll from August that found 82% to opine that the federal government 'should not have the power to require all Americans to buy health insurance'.”
You may view the cited article here:
What is everyone's opinion? Constitutional? Unconstitutional?
I personally believe it is not only unconstitutional, but un-American to force Americans to buy a commercial product, given our revolutionary history with British mercantilism, which forced American colonists to buy only British goods while not being able to produce but certain specifically allowed goods and materials in the colonies. American colonists were forced by law to send all their materials to England for manufacture, then to be sold to the American colonists. In addition, Americans were prohibited from engaging in trade with other nations, specifically with tea, so as to boost up the East India Company, who harvested and sold tea as one of their main products. Thus, smuggling became rampant in America, and many American colonists favored production of products in America and free trade, including being able to buy and sell foreign tea.
James Otis, Jr., a 1760s and 1770s Boston radical Whig and revolutionary, as well as lawyer, wrote a 1765 pamphlet entitled "Considerations on Behalf of the Colonists," in which he talked about the unfairness, inequality, and harm caused and done by the British mercantilist system.
John Dickinson, another American radical and revolutionary, as well as lawyer from Pennsylvania, from the American Revolution era wrote two letters denouncing the the 1773 Tea Act, as well as a 1765 address, titled "An Address to Friends and Countrymen on the Stamp Act" (which begins on page 197 on the hyperlink provided), which served as an inspiration for my linked article above concerning the un-American-ness of the individual mandate.