The Affordable Care Act has particular relevance for the United States foreign-born population since they are over 2.5 times more likely than their native-born peers to lack health insurance and because they constitute a large and growing share of the U.S. population. This brief highlights the demographic and socioeconomic characteristics and health insurance coverage for key immigrant subgroups and describes how the ACA could affect coverage and access to care for these subgroups and their families.