We couldn't have a mandated algorithmic transparency, but there is an exception for criminal investigation. Would an investigation by Elections Canada or the Privacy Commissioner count as a criminal investigation? That's kind of an open question.
I have no definitive views about article 19. I only read it this morning. I'm going to be lawyerly and cautious and say that I'm not sure of all the implications. It does address and seem to restrict, potentially, in some ways. I suggested liability for social media platforms for repeated breaches of norms around elections. There might be USMCA implications under article 19 that would make that less viable as a policy proposal.