The number of uninsured Americans declined by 8.8 million in 2014, the first year the major insurance reforms of the ACA took effect, according to a federal survey of 98,000 people released by the U.S. Census Bureau this month. In a new blog post, The Commonwealth Fund’s Sara R. Collins, Munira Gunja, and Sophie Beutel report that the Current Population Survey found that 10.4 percent of the U.S. population, or 33 million people, were uninsured in 2014, down from 13.3 percent in 2013.