Hopefully not, Canada likes to peak into US records for stuff like a DUI from years ago from some guy who slept in his car at the bar so he would not drive home drunk, resulting in a policeman arresting him and then him being barred from the usual process of entering Canada.

Canada ending their intelligence sharing with the US would be a big win for citizens in the US and Canada. They basically rely on sharing records with a government with a very hostile and notoriously flawed justice system (that in practice results in quite racist results) and then using it to judge US citizens, which favors other immigrants from countries with weak or less flawed criminal systems or ones that do not share information with Canada.