This 15th annual 50-state survey provides data on Medicaid and Children’s Health Insurance Program (CHIP) eligibility, enrollment, renewal and cost sharing policies as of January 2017, and identifies changes in these policies in the past year. As discussion of repeal of the Affordable Care Act (ACA), broader changes to Medicaid, and reauthorization of CHIP unfolds, this report documents the role Medicaid and CHIP play for low-income children and families and the evolution of these programs under the ACA. The findings offer an in-depth profile of eligibility, enrollment, renewal, and cost sharing policies in each state as of January 2017, providing a baseline against which future policy changes may be measured.