The Patient Protection and Affordable Care Act (PPACA), also known as Obamacare, was signed into law in March 2010, aiming to increase healthcare quality and affordability while expanding coverage to millions of uninsured Americans. Key provisions include an individual mandate for insurance coverage, Medicaid expansion, and reforms to insurance companies regarding pre-existing conditions and spending caps. Although proponents argue it will reduce federal deficits and healthcare costs, critics warn of increased premiums, potential loss of current coverage, and a looming physician shortage.