Approximately 10.5 million undocumented immigrants currently reside in the United States, representing 3.2 percent of the total U.S. population. Although they may have lived in the U.S. for years and have been contributing to the economy, undocumented immigrants are barred from accessing federally-funded public health insurance programs, like Medicaid, and buying coverage from the Affordable Care Act (ACA) Marketplaces. As a result, the uninsured rate of undocumented immigrants is nearly five times higher than that of citizens. In 2019, an estimated half of undocumented adults and one-third of undocumented children were uninsured.