If Korean, like China Airlines, did not hire expats, they would not be flying into the US. The company has little choice. Doesn't help the "local's" I suppose.
Please check your resources before making a such remark. China Airlines was never MANDATED to hire any expats. The need to hire an expats was because not enough locals to filled the seats, PERIOD!
If what you've said was true, wouldn't it be a requirements to have at least 1 expat in the cockpit on every flight? But sorry to disappoint you because that was not the case and now the expats are being let go due to the current economic downturn. Go figure.