To be fair,
the guys that left us in the lurch last year -- it was NOTHING to do with their nationality, it was their PERSONAL morals and principles. One guy even rang Ops at 2200 to tell them he was no longer available for a duty next day as he was leaving instantly.
Whether they were foreigners or not matters not at all. The cost was the same for subcontractors. We had a particularly exceptional Captain from Oz called Dave Reid on time off from Qantas.
By the way, there is a fantastic new sport called Welterbaiting. If you want to know the rules then please PM me.