Health Insurance For Elderly Is There A Medicare/health Care Insurance For Elderly Tourists In America? Where Can I Find 1 For Them?

Is there a medicare/health care insurance for elderly tourists in America? Where can I find 1 for them? - health insurance for elderly

My parents visit this winter. My father suffers from asthma and medical care. I'm worried that there may be an asthma attack while here and I can not pay for hospitals or doctors.