My biggest problem with this whole thing is the legal framing of his actions.
If the bus had instead been a car with a single, middle-aged occupant, I think everything would have gone quite a bit differently.
If that single occupant had not been killed, but made a full recovery, it definitely would have gone a lot differently.
If it had been merely a cop observing the infraction, he would have escaped with just a ticket. At worst, I suppose he might have got a temporary license suspension.
I have difficulty accepting that the identical behaviour should have such radically different punishments just because pure chance leads to radically different outcomes.
Note that I'm not saying that someone who kills someone else should be getting off scott free, regardless of the behaviour that led to the death. But maybe there is room to increase the penalties when dangerous behaviours have little or no consequence as well as room to move on how we handle behaviours that rarely have devastating consequences. Let's face it, the vast majority of those who even deliberately blow through rural stop signs will never even get a ticket, let alone kill someone.
Personally, I don't see this person as a threat to our society, so I see no reason to deport him.