I'm also trying to find out, but last I read they were let in and it looks like they will be able to stay. The CNN article I read said that only a handful had come over but there was a concern that once it gets warmers more will come as well as non refugees like Mexican migrants. What Canada will do then, if that occurs, will be interesting.
As you know Canada has a very controlled immigration process. Since it is controlled it allows Canada to welcome more refugees but Mexican migrants are not refugees.
Here in the USA illegal immigrants (which are mostly just migrant workers) are stealing the spots that should be reserved for actual refugees.
Ontario farmers have relied on Mexican migrant workers for many years. How they get here, I'm not sure. Probably flights. As for the Somali refugees I would say that if they can be back checked they should be most welcomed. Think about the fortitude it must have taken to make it from Africa all the way to snowbound Manitoba! Lots more guts and determination than most of us who just sit around our computers and whine about the global state of affairs.