Earlier quoted context omitted.
> They cannot afford to lose healthcare coverage. And with Obamacare, they don't have to. They should be able to purchase decent coverage on the exchange, right? That's what we did when I quit my job.
The amazing coverage they have is barely cutting it. He pays pennies on the dollar for the coverage they get. I can't imagine it would be like this at all on the exchange.
Obamacare in MN is through https://www.mnsure.org/ . Your father being fired or laid off qualifies as a special enrollment event.
If your mother is seriously ill, look at gold plans and simply look at the maximum out of pocket. Find a plan with a maximum out of pocket of $2k or even $1k pp. They'll spend it all, and after that, your out of pocket expenses will be limited to copays. They will even be eligible for assistance paying for it if your parents' income falls.
From a brief poke around the above website, for zip 55401 and two adults born 1/1/1960, you should be able to find a plan for under $1k/mo unsubsidized with a $3k/family/year maximum out of pocket. This is almost certainly less than cobra will cost. Be careful of narrow networks though, particularly if your mother is being actively treated by a doctor/hospital.
Good luck to you and yours.