Medicaid expansion refers to the provision in the Affordable Care Act (ACA) that allows states to extend Medicaid coverage to low-income individuals and families. Under the expansion, states have the option to expand Medicaid eligibility to include individuals with incomes up to 138% of the federal poverty level. This has resulted in millions of previously uninsured individuals gaining access to affordable healthcare coverage. Medicaid expansion has been a topic of debate among policymakers, healthcare providers, and advocacy groups, with arguments focusing on the potential benefits of increased coverage and improved health outcomes, as well as concerns about the financial sustainability of the program and the potential for government overreach.