Senator WATT (Queensland—Minister for the Environment and Water) (17:19): I thank Senator McDonald. I might make the point that it should be very clear to all watching that it is the opposition and the Greens who have prevented this parliament from continuing to sit and answer questions this afternoon. We're prepared to stay as long as anyone wants us and as long as anyone has got questions. Twice we've attempted to move to not adjourn until the Leader of the Government in the Senate asks that further questions be placed on notice. It would appear that Senator David Pocock, for all of his posturing; the opposition, for all of their posturing; and the Greens don't want to stay and ask questions. The PRESIDENT: Senator McDonald? Senator McDonald: Relevance. The PRESIDENT: Have you finished answering, Minister? Senator McKenzie: He hasn't started! Opposition senators interjecting— The PRESIDENT: Senator McKenzie, I have reminded the Senate since question 11 that these additional questions came from a motion of the Senate yesterday, which was agreed to by the chamber, and I have said since question 11 that questions and answers will be heard in silence. I also remind all senators of the motion that was passed earlier in the week, which went to respect. I should not have to call individual senators to order. I should not even have to call, 'Order!' You can have the robust debate in the answer to your question, but, in the intervening time, you will listen in silence. Senator McDonald, you made a point of order. I will draw the minister to your question. Minister Watt. Senator WATT: I'm very pleased that from day one, when we introduced the bill into the House of Representatives, we've seen support for the reforms from the Ai Group—who, of course, represent many businesses in the mining sector—from the Clean Energy Council and from the housing industry of Australia. Just like they're on board, you should get on board too. The PRESIDENT: Senator McDonald, first supplementary?