Cypress Hills-Grasslands Conservative Member of Parliament David Anderson is one of many wanting to know more about what's gone on in the Office of the Prime Minister (PMO) regarding potential conversations about the prosecution of engineering and construction company SNC-Lavalin.

Yesterday the Liberals quashed a motion put forward by the NDP and supported by the Conservatives that would have resulted in a public inquiry regarding now-former-Attorney-General Jody Wilson-Raybould and whether she was instructed, to some extent, to get a better deal for SNC-Lavalin.

The Montreal-based organization was charged with corruption, and an article in The Globe and Mail suggested Wilson-Raybould was demoted from Attorney General to Minister of Veterans Affairs because she wouldn't cooperate to try to get the company to avoid criminal conviction by using deferred prosecution agreement.

Wilson-Raybould didn't cast a vote yesterday. She said she'd like to tell her story, but doesn't have power to waive attorney-client privilege.

Prior to yesterday's vote, Anderson said in a phone interview that the issue is the cover up - with Wilson-Raybould seemingly back in the fold, since resigning from the PMO as well, and with Trudeau's right-hand man Gerald Butts resigning more recently.

"The question is what actually happened," said Anderson. "Allegations come here and there and we see different things, but the issue has been why the cover-up. Why would a minister who's demoted, then all of a sudden we get these stories in The Globe and Mail, and you turn around and the prime minister's closest advisory is resigning for some reason. And then the minister who's demoted and quit is welcome back into the Liberal caucus after a meeting, and the whole thing smells to high heaven. We really want to see what's happened here; what's gone on."

Anderson said he's curious how things will play out.

"It's really interesting. We're just trying to find out what the prime minister's up to. So far he's had ministers resign, he's had his closest friend and closest confidant have to resign, and then they brought the minister back who had resigned, had a four-hour long meeting with her [on Tuesday]. And then after they came out of the meeting, nobody knows what was said in there, we were all assured that everything is just fine and she's back in the fold and she's a happy person. So, there's a lot of things that are taking place here."

Anderson also commented on how the last Liberal budget had a small clause in the middle of hundreds of pages that would allow deferred prosecution agreements for corporations to avoid criminal penalties by going the way of remediation and therefore be able to put in more bids on projects.

Although the PMO's been quiet about the situation, Trudeau did send a tweet thanking Butts for his work.