I can't personally speak to the accuracy of the linked claim below, but it suggests that the coverage of residency spots is controlled by a physician led adviso

I can't personally speak to the accuracy of the linked claim below, but it suggests that the coverage of residency spots is controlled by a physician led advisory board called RUC that intentionally limits the reimbursement so as to control wages. http://www.motherjones.com/kevin-drum/2013/11/its-doctors-who-control-number-doctors-america-not-government/ http://www.motherjones.com/kevin-drum/2013/11/its-doctors-wh...