FILE – In this May 12, 2009, file photo Jonathan Gruber, professor of Economics at the Massachusetts Institute of Technology, participates in a Capitol Hill hearing on the overhaul of the heath care system in Washington. A supporter of the Affordable Care Act, Gruber says, “It’s so crazy to think that a society that has Social Security and Medicare would not find this (law) constitutional.” Gruber advised both the Obama administration and Massachusetts lawmakers as they developed the state mandate in the 2006 law that Republican presidential candidate Mitt Romney championed as governor. (AP Photo/Pablo Martinez Monsivais, File)