Per usual a bunch of wrong, misleading and speculating information posted on PPRUNE. But then again it is a rumor network. Truth is, as per the SFO ground staff office. An ex CX ground staff who now works for SA is being investigated. The individual in question worked for CX in 2008 and never had the legal right to work in the USA and has since been illegally working for SA. Nothing to do the Canadians commuting to/from work. Which is yes. Legal.