Delta's pilot wages and benefits were decimated by the 2005 bankruptcy and they are still playing catchup over a decade later. Lowly freight dogs at FedEx and UPS still make more than the Deltoids and have significantly better work rules.
Most of the pilots at Cathay don't meet the requirements for employment as a pilot at Delta anyway:
General Requirements
At least 23 years of age.
Graduate of a four-year degree program from a college or university accredited by a U.S. Dept. of Education recognized accrediting organization.
Degrees obtained from a non-U.S. institution must be evaluated for equivalency to U.S. degrees by a member organization of the National Association of Credential Evaluation Services (NACES).
Current passport or other travel documents enabling the bearer to freely exit and re-enter the U.S. (multiple reentry status) and be legally eligible to work in the U.S. (possess proper working documents).
Delta - Pilot Basics
I'm guessing that CX has plenty of 'North Americans' but not too many Americans working as pilots at the present time.
