The document discusses the history and role of Community Health Centers in providing healthcare to underserved communities in the US. It notes that Community Health Centers have served nearly 18 million people over 42 years, with the majority being low-income, uninsured or on Medicaid. It advocates for continued growth of Community Health Centers to serve more of the 56 million Americans who lack adequate healthcare access. It also outlines challenges like increasing numbers of uninsured and changes to health insurance that affect Community Health Centers, and opportunities through provisions in the Affordable Care Act.