How has the ACA affected Medicaid coverage?

The Affordable Care Act (ACA) has significantly expanded Medicaid coverage as one of its key provisions aimed at increasing access to healthcare. By introducing measures to expand Medicaid eligibility, the ACA allowed states to extend coverage to individuals and families with incomes up to 138% of the Federal Poverty Level.

This expansion not only aimed to cover more low-income adults but also sought to reduce the number of uninsured individuals across the United States. Additionally, the ACA provided federal funding to support states in their efforts to expand Medicaid, incentivizing many to adopt the expansion despite initial resistance.

Overall, the impact of the ACA on Medicaid has led to millions of additional individuals gaining access to essential health services, which has been an important step toward addressing health disparities and improving public health outcomes. This expansion reflects the ACA's overarching goal to increase healthcare accessibility rather than diminish it, which aligns with the correct answer that highlights the expansion of Medicaid coverage.