here is a cnn "fact check" about the law,
Fact Check: Is Obamacare unpopular? – CNN Political Ticker - CNN.com Blogs
and mostly to the point that I am saying is that this isn't a law which has high percentage buy in, and while, yes it has passed the process, there are alot of US citizens who feel that this law is not what they want, and the president should acknowledge that nearly half the country has issues with this law. To me, a president who started by saying he was going to unite the country, ought to give credence to that, and resolve to find a way that brings unity, not division to the country. (and that does go for the republican side who refuses to see a need for some reform to be done when nearly 50% support this law)