Naughty Al. Abed.. No but Robertbola once you get your PR it cannot be cancel. You could even divorce in the airport once you arrive. So this means when you got your PR in your hand, there is no return.
So NOT true. Divorce in the airport? LOL! And you are forgetting about other issues. If someone commits a crime before landing that would make them criminally inadmissible and CIC or CBSA found out about it, they are not going to be allowed to land.
First, having a PR VISA and actually "landing" are two different things. According to the Act, you are not a PR until you "land" so if you got divorced from your sponsor before you landed and the sponsor sent this proof to CBSA, they would not allow you to "land" because you wouldn't be a member of the family class.
Now Leon is absolutely right in that if you duped a sponsor into a marriage or relationship of convenience, landed and then left, you could probably get away with it. That's not what it says in the Act because it is illegal according to the Act and you are guilty of misrepresentation, a criminal offence under the Immigration Act. However, nobody wants to be accountable for it. CBSA will pass the buck to CIC who will pass it to the RCMP who will pass it to CBSA and so on and so on. But within the last year there has been a lot of negative press in Canada about exactly this topic and CIC is under a lot of pressure to do something about it. They do have a fraud investigation department for this but it's understaffed and overworked with too many complaints. There are several investigations ongoing right now and some folks have had their PR revoked and been deported. There is also a group gaining more and more lobbying power in the government to prevent this type of thing. But there is no easy answer to it. CIC doesn't want to get into your "bedroom". There are too many variables. What if a couple broke up one year after landing and the sponsor shouted "immigration fraud!" Probably totally bogus claim of fraud because more than likely they broke up for the normal reasons but hell hath no fury like a sponsor scorned! Then you are mixing family law issues with immigration law and getting into a "he said, she said" ordeal. However, with more and more duped sponsors making tons of noise about this, it could be a greater issue in the future. You know, the squeaky wheel gets the grease!