Take the children to see a doctor in America.
Hello! Going abroad to see a doctor seems to require a medical invitation letter from an American hospital, and you can only go to the hospital that issued the medical invitation letter after treatment in the United States, otherwise you may be blacklisted. I'm not sure what to do with it. You can learn from professional medical information consulting institutions. I once read on the Internet that a company called Dada Information Consulting Company said that it can provide one-stop services such as handling medical visas, making appointments for medical institutions and doctors, airport pick-up and accommodation arrangements, and overseas air rescue according to the needs of domestic patients. Their company is a professional provider of overseas medical information consulting services, providing one-stop overseas medical services for domestic patients. You can learn about the process of going to the United States for medical treatment from their company. Here's to health!