Thank you for taking time to respond.
With that being said,
1.) Is it worth trying to hire an immigration lawyer if we know in fact that this person already committed a mistake?
2.) I know this may sound Insane but would it change a thing if this person informs the CIC about the misrepresentation?
3.) Have you seen other cases like this? Do you know what happened to them after the ban?
Thank you
Whether to pay for a lawyer is largely a question about what the individual can afford. This is a situation in which, at the least, a lawyer should be consulted. But sure, of course, and unfortunately, lawyers are expensive and many cannot afford a lawyer.
Note, however, this individual could pay for a CONSULTATION without hiring a lawyer for representation. This is expensive enough (free consultations are worth what you pay for them, little or nothing). But the costs can be capped . . . last I knew, a good, informative consultation would cost $300 to $700. To get one's money worth, however, it is imperative to do as much homework as possible, to get as well informed about the issue as possible, BEFORE the consultation . . . so you are not paying the lawyer for a lot of time to explain the basics and, more importantly, so the individual can better understand and put the lawyer's information and advice into context.
Consider your question about informing IRCC (CIC is the former name of IRCC) of the misrepresentation. When and how loom just as large. This is a question which is not insane but, rather, both complicated and dependent on the specific facts as well as personal priorities.
And no one here can offer any reliable advice about this. Again, a lot of personal matters need to be considered. For example, perhaps this individual could renounce PR status and that might be the better route to go, for this particular individual.
I DO NOT KNOW this is a better approach. Not by a long shot. I am NO expert. BUT just as importantly, I do NOT know and CANNOT know enough of the individual circumstances to form a reliable opinion about how to deal with this, even if I was qualified to offer personal advice, which to be clear I am NOT qualified (and no one else here should be considered qualified to give personal advice). THIS IS PRECISELY THE SORT OF QUESTION A LAWYER CAN HELP ANSWER.
As for experience with this: I know no one personally. In contrast, there is a good chance an immigration lawyer will have had some experience with this, or at least related experience and have learned about how these things go in the course of his or her practice.
Anecdotal reports about this tend to be few, fleeting, sporadic, and even when there is some anecdotal reporting about this here, it tends to be rather sketchy, and especially lacking in details about the ultimate outcome.
In terms of IAD panel decisions discussing actual cases, this is a particular issue I have NOT researched. IAD panel decisions can be researched at this site:
https://www.canlii.org/en/ca/irb/
Federal Court decisions can also be researched, at this site:
https://www.canlii.org/en/ca/fct/ BUT there are few decisions in actual cases involving this issue.
There are, of course, more than a few cases in which PRs have lost PR status based on misrepresentation related to marital status. While researching the IAD decisions is not exactly easy, it is something many people can do. The main thing to avoid is selectively reading bits which support a favourable interpretation . . . the decisions should be read as OBJECTIVELY as possible, to learn as much as one can, and then use that information to ask better questions of a lawyer and to facilitate better understanding a lawyer.
No lawyer can change the situation.
To be clear: while a lawyer cannot change the facts, there are reasons why lawyers get paid as much as they do.
In particular, the consequences, the outcome, will vary considerably depending on many individual factors, and it can depend a great deal on how the individual proceeds from here. A lawyer's assistance at this stage could have a BIG IMPACT.
If someone in this situation can afford a lawyer, this is precisely a situation in which it is important to at least consult with a lawyer. For information. For advice. And, perhaps, for representation.