Scandal in a nut-sac:
SNC-Lavalin had hoped that its fraud and corruption charges could be resolved with what's known as a deferred prosecution agreement (DPA), which would spare the company a trial and possible criminal conviction
This is what got the US banks out of trouble when the Subprime mortgage crisis in 2008
It's basically a get out of jail card for corporations.
You pay a fine and say your sorry, get a wrist slap and play fair, wait a few years and it's business as usual.
What the Canadian corporation, SNC-Lavalin, did wasn't as nearly bad as what the US banks did.
SNC-Lavalin bribed middle eastern politicians to get contracts there.
This is established practice.
Trudeau, in choosing his cabinet, decided to virtue signal in high mode and chose a 1st nations female lawyer, Jody Wilson-Raybould, as his Minister of Justice and Attorney General of Canada.
A position for which she had little experience.
When SNC-Lavalin got it's hand caught in the cookie jar with the bribes, she was asked to give the wrist slap of a fine, not the 10 yr ban on SNC-Lavalin being able to bid on anymore gov, contracts.
This was a good thing for the Canadian economy.
She decided to play Ms Jody Wilson-Raybould(Smith) goes to Ottawa, and say no, bad corporation has to be punished, even if it hurts 1000's of people associated with SNC-Lavalin, who did no wrong.
She was demoted for this decision.
Shit hit the fan