The Ottawa police, report to the city of Ottawa. (https://en.wikipedia.org/wiki/Ottawa_Police_Service)

The Ontario police, report to the Province of Ontario (https://en.wikipedia.org/wiki/Ontario_Provincial_Police)

The RCMP, reports of the Country of Canada (https://en.wikipedia.org/wiki/Royal_Canadian_Mounted_Police). And the RCMP is "a police service for the whole of Canada to be used in the enforcement of the laws of the Dominion, but at the same time available for the enforcement of law generally in such provinces as may desire to employ its services."

The most important part is the RCMP enforcement in provinces is at the DESIRE of the provinces, in this case The Ontario Provincial Government.

Some Canadians may know the above.