Senator COLBECK (Tasmania—Minister for Aged Care and Senior Australians and Minister for Youth and Sport) (14:54): It's not up to me to determine what another senator does. That is not my role. My understanding is that Senator McKenzie has provided a substantial submission to the committee. She's provided support to the committee with respect to their work. But it is not the role of one individual senator in this place, any individual senator, to dictate what another senator might do. We are all elected here in our own right. Senator Wong interjecting— The PRESIDENT: Order! Senator Wong! Senator Birmingham? Senator Birmingham: I have a point of order, Mr President. You have called Senator Wong to order quite a number of times today. The PRESIDENT: A couple of times, actually. Senator Wong? Senator Wong: On the point of order, I accept that. But it is not about one person; it's about the Westminster system— The PRESIDENT: Senator Wong, please resume your seat. I had been calling you to order. Senator COLBECK: My understanding of the circumstances is that the committee has written to Senator McKenzie seeking her further assistance. Senator McKenzie will clearly make a decision with respect to it. The PRESIDENT: Order, Senator Colbeck. Senator Green, a final supplementary question?