US health care bill unconstitutional?

Is the recently passed US health care reform bill unconstitutional? Some states think so and are suing.

I don't know, possibly. It wouldn't surprise me at all. But then again by that standard these US federal government schemes are also unconstitutional

• social security
• medicare
• fannie mae
• freddie mac
• FHA
• HAMP
• help for homeowners
• cash for clunkers
• medicaid
• food stamps
• HUD
• federal department of education
• bailout/nationalization of GM, Chrysler, AIG, Bear Stearns

Why would the states wait until now to say something? It's about 80 years too late for the states to say something about the federal government encroachment on their turf. Maybe it's been too late since 1865.