Its MUCH better to become a physician in your home country and try to apply for residency in the US, that is called IMGs. At least you have 50% chance to success. If you are really good, in a blue moon, you might become a dermatologist. There is such a doctor who made a clip on Youtube, try to search: Top 5 IMG friendly residencies in the US(pathology is number one), at the end he disclosed he is in derm residency.