Ottawa and the provinces should agree to a hard stop on solitary confinement as a tool for managing mentally ill inmates, and ensure that those inmates get proper care. 

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Easy enough to say but how exactly is the state supposed to manage mentally ill inmates?  Establishing definitions of solitary confinement is sensible and maintaining efficient records of those confined is basic. Once these are in place the problem remains because no one appears to know how to manage mentally ill and often dangerous offenders in a humane, safe, effective manner.