I believe the issue that ALPA are pushing is not about the (assumed, but unverifiable) subsidies paid to the Gulf 3 by their owner states, but the subsidies which they obtain from the US exchequer in the form of Export Credit Guarantees paid via the US Exim Bank. These are seen by ALPA as effectively being a subsidy from the US taxpayer to airlines who are now in direct competition with their own US carriers.
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