People signing up for health insurance through the Affordable Care Act's federal and state marketplaces tend to be older and potentially less healthy, officials said Monday, a demographic mix that could threaten the law's economic underpinnings and cause premiums to rise in the future if the pattern persists. Questions about the law's financial viability are likely to become the next line of attack from its critics, as lawmakers gear up for the midterm elections this fall. Republicans quickly seized on the government's progress report on Monday as evidence that the health insurance law would not work.
