No one is above the law, so all Canadians are subject to the law, including criminal law, and can be the subject of investigations.
I think the RCMP stated yesterday that, although that might be a possibility, there are internal mechanisms to ensure that the surveillance of a member of Parliament requires a higher authorization within the RCMP. I have no knowledge that MPs are surveilled in that way, but certainly at the level of principle, no one is beyond the law.