Here's an article in the New Republic that discusses legal challenges to health reform. And here's a post from The Incidental Economist that explains why the mandate is very similar to other government programs that try to use economic incentives to get us to do stuff.
It seems to me like the Democrats have totally screwed themselves by not structuring the mandate like a tax deduction, but I think they thought they'd be in safe territory since the mandate thing was a Republican idea to start with.
