Senator WATT (Queensland) (14:57): The Attorney-General has now revealed that taxpayers will foot the bill for the minister's application to set aside the subpoena. Who is acting for the minister in relation to this matter, and what is the estimated cost associated with responding to the subpoena? Senator Ian Macdonald: Joe Ludwig! Senator Cormann: And Kevin Rudd. You don't want to go there. Senator Wong: You didn't even hear the question. The PRESIDENT: Senator Wong, if you— Senator Wong: You've pulled me up, fair enough, but pull the leader up too. The PRESIDENT: Senator Wong, I will manage the chamber. There have been a number of questions with interjections around the chamber that I haven't heard. Senator Ian Macdonald: This is abuse of the President. The PRESIDENT: Senator Macdonald, please remain silent while I'm ruling. Today has been particularly noisy, and it has been difficult to hear questions across the chamber, even from up here. Senator Ian Macdonald: Point of order: it is lack of courtesy but also against the standing orders that the Leader of the Opposition should continuously argue with you when you are making rulings. I ask you to deal with her as you would deal with any senator. This is not a separate Penny Wong charity event. She needs to perform to the same standards as every other senator should. The PRESIDENT: I have called numerous senators to order today, including senior senators, Senator Macdonald. I was just addressing that issue, and I thought I dealt with it sufficiently just then.