The supply of physicians in the United States is affected by a variety of complex factors. Given the current abundance, if not oversupply, of physicians and the dramatic changes under way in the US health care delivery system, policy makers have renewed efforts to implement strategies that will lead to an appropriate balance of physicians in the United States. Several organizations have recommended specific strategies for achieving that goal. The Veterans Health Administration has already decided to change the number and distribution of its residency training positions. These changes cannot, however, be viewed in isolation. The Veterans Health Administration plays an important role in the graduate medical education of many physicians in the United States, and the magnitude of the intended changes could have a significant impact on residency opportunities.