I found the Robert Reich column, Reich: Political jujitsu to save health care law, at SFgate.

If the Supreme Court strikes down the individual mandate in the new health law, private insurers will swarm Capitol Hill demanding that the law be amended to remove the requirement that they cover people with pre-existing conditions.

If this happens, Obama and the Democrats should say they’re willing to remove that requirement – but only if Medicare is available to all, financed by payroll taxes.

So I suppose I ought to withdraw my previous post Conservative Supreme Court Justices Inadvertently Make Case For Health Insurance Mandate before the justices realize that they have shot themselves in the foot.  Now we’re supposed to want them to knock out the mandate so we can get our Medicare for all just as we really wanted.

Reich also notes,

Those who are opposing the law say a requirement that individuals contract with private insurance companies isn’t regulation of interstate commerce. It’s coercion of individuals.