Under the Affordable Care Act (ACA) of 2010, states had the option to expand Medicaid coverage to nearly all low-income people under the age of 65. Eligibility for children was extended to at least 133% of the federal poverty level, and states now have the option to cover adults with income levels at or below 133% of the federal poverty level. The Affordable Care Act (ACA) expanded coverage so that more Americans have access to health insurance—which includes mental health treatment coverage. Under the ACA, both mental and behavioral health disorders are covered similarly to physical health disorders. This includes the treatment of substance use disorders.