I think I know the answer to this question but I was wondering if anyone has had personal experience with this or knows someone who did.
Assume one becomes an expat, not renouncing US citizenship but retiring abroad. In Uruguay, for example, healthcare seems to be reasonably priced and accessible.
You make a return trip to the States - vacation, wedding, funeral, whatever - and there is a medical emergency and you're carted off to the hospital. I know there's no coverage from Uruguay (no brainer) but I take it you'd be uninsured and get hit with a whopping bill?
I assume Medicare is only an option if you actually pay your monthly premiums. Is there no option from any source for temporary coverage when visiting the States?