How will the US Supreme Court rule on health reform?

The Patient Protection and Affordable Care Act, now two years old, is 1200 pages long and has countless provisions. Many of them have already taken effect, but much more change is to come over the next two years, most famously the so called individual mandate. In 2014, almost every US citizen will be required to buy health insurance, and companies of 50 or more employees will be required to offer it to their workers. In both cases, non-compliance results in a fine.