<https://www.medicarefaq.com/faqs/illegal-medigap-practices/#Question_2_acceptedAnswer_Answer>
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"It is usually not lawful for an agent to sell a Medicare Supplement plan to a dual-eligible Medicaid and Medicare beneficiary. However, there are some situations where an agent may sell a Medigap plan to someone with Medicaid."
<https://www.medicarefaq.com/faqs/illegal-medigap-practices/>