They can get them from the US. Last year, the FAA licensed 500 or so new Commercial Pilots.....that is correct, around 500, for the whole country.
In the US the number of new PPL, CPL, Instrument, and ATP pilots has been declining the past 12 years.
If you are US or have a green card, American Eagle, the largest regional airline, just dropped their mins to 500/50, and said that all Eagle pilots who join by this Fall will have a guaranteed seat in a new hire class at American Airlines down the road.
They are desperate, partly because in 2 years every airline pilot in the us will have to have a full ATP (no frozen ATPs here)....so every new joiner will need ATP which is currently at 1500 hours total time, with a lot of new added requirements to qualify for the ATP also.
cliff
HNL