Are healthy spouses held legally responsible for Medicaid expenses of sick spouses?

Are healthy spouses held legally responsible for Medicaid expenses of sick spouses?

http://www.medicaidpatients.com/medicaid-faqs/

Federal law pertaining to Medicaid allows states to “deem” the earnings and assets of healthy spouses as accessible to the sick spouses; the degree of which determined by whether the sick spouse is living in a nursing home (or an equivalent facility) or at home. The regulations for this varies by state.