On the Constitutionality of Individual Mandates
Here's George F. Will, pointing out that it is unprecedented to use the interstate commerce clause to force someone to engage in a commercial activity (in this case buying health insurance). Regulating transactions that already exist (forcing you to by car insurance if you choose to drive), we do. Forcing entirely new transactions on people? Totally new. We're obviously getting close to the singularity point where the interstate commerce clause allows the federal government to do anything that is not forbidden elsewhere in the constitution. That was not the original plan.