TPM:

The Obamacare case before the Supreme Court is too close to call, leaving the fate of President Barack Obama's signature domestic achievement up in the air. Chief Justice John Roberts, a critical swing vote in the case, barely spoke during the hour-long oral arguments Wednesday morning in King v. Burwell, dropping no strong clues about how he would rule. Justice Anthony Kennedy appeared to sympathize with the challengers' argument that the plain text of the law forbids subsidies on the federal exchange serving some three dozen states that didn't build their own. But he also seemed deeply worried about an intrusion on states' rights if the subsidies were stripped away without a clear warning.

The Obama administration isn't making contingency plans in case SCOTUS guts the law. NYT:

Administration officials insist that any steps they could take to prepare for the potential crisis would be politically unworkable and ineffective, and that pursuing them would wrongly signal to the justices that reasonable solutions existed. The do-nothing strategy is meant to reinforce for the court what White House officials believe: that a loss in the health care case would be unavoidably disastrous for millions of people.

And now Republicans are afraid they might get what they wished for. Jonathan Chait at NY Mag:

If it succeeds, which I would not bet on, the King v. Burwell lawsuit would eliminate tax credits for people buying insurance through federal exchanges. Yesterday, Ben Sasse, Republican senator and darling of the right, published a Wall Street Journal op-ed urging fellow Republicans to extend those tax credits for a year and a half. To make his message palatable to conservatives, Sasse decorates his argument with lots and lots of fiery denunciations of Obamacare’s evil bureaucracy that does not and cannot work.... Today, conservative reporter Byron York has much more detail. Private polling by a conservative group found that “huge majorities” would want Congress to restore subsidies for people who had lost them. “We're worried about ads saying cancer patients are being thrown out of treatment, and Obama will be saying all Congress has to do is fix a typo,” one staffer confesses.