A foreign educated MD has less than 50% chance to either pass USMLE or get into a residency program, as these programs are mostly government sponsored. Whereas an US medical school graduate has 95% chance to pass and get a residency program. Even a foreign educated MD got in a residency, most likely it will be in the family practice category, the better specialties are already been taken by US graduates. There is 1% chance to get into dermatology for US graduates as an example.
Have many MD friends from overseas, they had successful specialties in their own practice already, like cosmetic surgeon and cardiology etc. When they immigrated into US, they all start from ground zero and family practice.
So, either you have a half a million usd and be very lucky to be one of the 2000 US med school matriculates or be a US family doctor.