That's a good question. In fact, the premise is not currently operative. We have a practice eligibility route to certification for people to whom medical regulator authorities have already given licences and who are practising in Canada. Those individuals are able to access the Royal College certification without doing a formal residency training program by going through a multi-step assessment, a multi-dimensional evaluation process leading to a portfolio evaluation of the type of work they are doing, rather than a full examination of the full spectrum of their specialty.
Also, the family physicians of Canada, as far as I know, do have alternate pathways that do not involve residency or examination, depending on the country and accreditation system that has been employed in those cases. For those individuals who are deemed by a medical regulatory authority—not by the colleges—to require a residency program, there are severe constraints on the availability.
Canada has approximately 2,800 residency positions for intake into the first year of training after medical school. That number is closely related to the output of medical schools so that they guarantee each Canadian graduate the chance at a residency program. There are few extras set aside specifically for international graduates. Most are in Ontario. Taken altogether, about 250 residency positions are available. This is, however, insufficient to deal with the several thousand permanent residents and citizens of Canada who are international medical graduates.
The system has limited capacity to expand further. We now have residents-in-training outside major hospitals and urban centres all over. If funding were made available--deans of medicine are known to respond to the provision of hard cold cash--perhaps further residency slots could be made available.