Qantas will not take you unless you have the right to live and work in Australia and does not, nor has ever, supported work visas for foreign pilots.
The same applies for Air Canada.
E3 is a work visa NOT citizenship. I do not get why ALPA says one thing then another. I’ll hazard a guess that ALPA cannot stop a visa program in place for years but appear to be doing something for American workets by stopping Canadians since a visa program does not exist. The irony again, is that the Canadians have tons of Dash experience and Aussies, probably not a lot in the aircraft flown in the U.S., besides the B737, but ALPA diesn’t care about that.
It’s honestly stunning.