“All your Obamacare are belong to us.”
This problem was intentional and was built into Obamacare: an income level was set well above each state’s Medicaid eligibility but below which people are not allowed buy their own insurance or get a subsidy for insurance. A whole range of low-income people is purposely prohibited from obtaining health insurance in order to force states to expand their Medicaid programs. This, of course, will be used to try to embarrass Republican governors into expanding Medicaid and inviting HHS in.