Senator BIRMINGHAM (South Australia) (14:49): Mr President, I ask a further supplementary question. How does the carbon tax impact the competitiveness of a company like Qantas compared to regional carriers like Air Asia, especially when today's RBA statement describes confidence as subdued in the economy? Won't Labor's carbon tax make it more attractive for Australians to use international airlines with international staff travelling to international destinations rather than support Australian airlines with Australian staff, even TWU members, travelling to Australian locations?