“When the Supreme Court hears the state challenge to ObamaCare later this year, most of the attention will likely be on the challenge to the law’s individual mandate to purchase health insurance and its implications for the Constitution’s Commerce Clause. But in a somewhat unexpected move, the Supreme Court has decided to allow for a full hour of oral argument regarding another part of the case: the expansion of Medicaid, the joint federal-state health program for the poor and disabled, which is expected to account for half of the law’s health coverage expansion.”