Senator CASH (Western Australia—Leader of the Opposition in the Senate) (14:15): My question is to the Minister representing the Prime Minister, Senator Wong. President Trump has today indicated that he is considering increasing the base-level tariff on all countries that don't have tariff agreements with the US to between 15 and 20 per cent, which could double the 10 per cent tariff previously announced for Australia. Minister, can the Prime Minister confirm whether Australia will be subject to a 10 per cent, 15 per cent or 20 per cent tariff from the United States? The PRESIDENT: Minister Wong— Senator Sterle: What a stupid question. The PRESIDENT: Sorry, Senator Wong, if you would just resume your seat. Senator Ruston? Senator Ruston: I was wondering whether you might reflect on the fact that senators from the other side are referring to questions asked by the opposition as 'stupid' and whether that is parliamentary. Senator Sterle interjecting— The PRESIDENT: Order! Senator Sterle, just keep your thoughts to yourself. Minister Wong.