So these are two different things right? Election interference is one thing, but MPs being compromised by a foreign government is another different thing.

They're not always different. The Han Dong case is an example where they're intertwined. We know for a fact that Han Dong's nomination for Liberal candidate in the safe Liberal riding of Don Valley North was influenced by Chinese government pressure on Canadian citizens. It doesn't properly fall into Elections Canada's purview. The Liberals only ejected him from their party once it became publicly known that his candidacy was influenced by China. Somehow, he's still a sitting MP.

I don't think it should be left up to the leader of the party to make a call on what to do. Liberals w/ Han Dong (and possibly others, we don't know), and Conservatives, with their leader not even being briefed. There needs to be some other system or mechanism to address foreign compromise that doesn't rely on the whim of party leaders who have proven that they'll choose to deal or not deal with interference issues depending on how it might benefit or harm their party.

If RCMP investigations get bound up, and information sealed away for instances of interference that ultimately don't end up being criminal (like in Han Dong's case), something should still be done to remove them from Parliament, or censure / warn them, as the circumstance dictates. It seems to me that the secrecy of active investigations functionally acts to shield foreign influence operations from being exposed and properly responded to.

I know what you mean when you say that the government shouldn't be relied on to investigate itself. At the same time, I think they are the only body right now that can put effective mechanisms in place to deal with this issue. The fact that neither the Liberals nor the Conservatives are trustworthy enough to do this, is neither here nor there. Government should be doing something, and a responsible government that worked for the people would have started 7 years ago.

My hope is that the Election Interference Commission provides sound recommendations that are actionable before the next federal election. However, we're in a situation where the next federal election could be any day now. This is all happening too late, and I can't see how that's anybody but the Liberals' fault.