I decided I'll answer the question even though I don't accept the premise. * CSIS is a civilian national intelligence service * RCMP is a national police serv

I decided I'll answer the question even though I don't accept the premise. * CSIS is a civilian national intelligence service * RCMP is a national police service They're related because CSIS was born out of recommendations from the McDonald Commission. After the FLQ crisis, Canada understandably had a bit of a 9/11-style overreaction, and the RCMP Security Services got involved in a number of scandals stemming from overzealous and illegal activities. The RCMP Security Services were consequently abolished and their responsibilities were given to the newly formed CSIS, which was overseen by the newly formed SIRC. One could consequently reasonably say that CSIS was the successor to the RCMP Security Services. However, it's really impractical for policing to be completely divorced from intelligence work, so much as the FBI does intelligence work despite the US having numerous civilian & military intelligence organizations, the RCMP continue to do intelligence work.