In a new video, The Commonwealth Fund's Sara Collins explains how the Affordable Care Act will ensure near-universal health coverage for Americans through a series of insurance expansions and reforms. This is the fourth video in our "Health Reform and You" series, designed to increase understanding of the evolving U.S. health care system. Earlier videos looked at how the Affordable Care Act will change the way we pay for and deliver health care, how the law will improve care for vulnerable groups, and how it will strengthen primary care. We encourage you to share or embed these videos on your own website or blog.