"A lot of that coverage you're getting is because of the premium subsidies," Mr. Holahan said. "You're still only getting 40 [percent] to 50 percent as many people covered."
"If states do adopt the expansion, the federal government will pay for most of this," said John Holahan, one of the authors of the Kaiser Family Foundation and the Urban Institute report. "The additional state cost is pretty small relative to what spending would be without the expansion. [It] should be pretty hard for states, eventually, to walk away from."