hobo,
I had asked the same question earlier in this thread. I couldn't find the specific statement either.
I did stumble across this wrinkle though:
Let's see if I understand this correctly…I might not.
Skywest Airlines is owned by the corporate umbrella that also owns Expressjet Airlines.
http://inc.skywest.com/corporate-inf.../?t=expressjet
In the Expressjet list of pilot quals, there's this statement:
"Authorization to work in the United States without sponsorship"
It's interesting that one airline under the same corporate ownership is said to being sponsoring expats for pilot employment but another carrier under that same ownership specifically says it isn't.
Maybe Expressjet being an ALPA carrier and, IIUC, Skywest isn't ?
ExpressJet Pilot Qualifications | ExpressJet Airlines