Source: iStock photos.The Patient Protection and Affordable Care Act (also known by the shorthand "Obamacare") was passed in 2010 with two primary goals: Reduce the rate of uninsured Americans, and cut healthcare costs. Despite a number of setbacks -- most recently UnitedHealth Group's recent announcement that it is exiting most of the Obamacare public exchanges because its footprint there was unprofitable -- the law is largely succeeding in its first goal.