Senator CORMANN (Western Australia) (14:15): Mr President, I ask a supplementary question. Given the clear warnings from the mining industry about the increasing costs of doing business in Australia, warnings of slower growth in China and a worldwide slide in commodity prices— Senator Wong interjecting— Senator CORMANN: why is Labor still pressing ahead with the world's biggest carbon tax and a mining tax which, on top of everything else, has provided a direct federal government incentive to state governments around Australia to increase their royalties on iron ore or coal? The PRESIDENT: Order! Senator Wong, you will need to withdraw that. That is disorderly. Senator Wong: I withdraw. The PRESIDENT: The minister. Senator Wong interjecting— Senator Cormann interjecting— The PRESIDENT: Order! Senators Cormann and Wong, it is disorderly to debate across the chamber. The minister.