Senator DI NATALE (Victoria—Leader of the Australian Greens) (14:19): My colleagues did the honourable thing, the decent thing, the right thing. They acted with integrity because, when they stood down from parliament, they upheld the Constitution. We then saw Senator Canavan adopt some sort of halfway house of being a member of this parliament while no longer being a minister. We've now seen the Deputy Prime Minister stoop even lower. We have the issue with Senator Roberts. When will this government do a comprehensive audit and settle this question once and for all?