Medicaid expansion, What's That?
One of the primary provisions of the Affordable Care Act gives states the options to expand their Medicaid eligibility to include people below 138 percent of the federal poverty level ($16,735 per year for one person or $34,638 for a family of four). The costs of expansion were paid for in full by the federal government through 2016, before dropping down (and freezing at) 90 percent in 2020, well above the typical federal match.
As of May 2018, 31 states and the District of Columbia have expanded Medicaid. Oklahoma has opted not to, leaving billions in federal funding on the table, and roughly 150,000 Oklahomans in a ‘coverage crater’ (too low-income to qualify for subsidies on the health insurance marketplace, too wealthy or not a member of a population group that is eligible to qualify for traditional Medicaid in Oklahoma).