Mr ABBOTT (Warringah—Leader of the Opposition) (14:14): My question is to the Acting Prime Minister. Can the Acting Prime Minister name a single head of government at the G20 conference, apart from the Australian Prime Minister, who has hit workers and families with an economy-wide carbon tax of at least $23 a tonne? Mr Robb: Good question! Opposition members: Name one—just one! The DEPUTY SPEAKER ( Ms AE Burke ): Order! Do the opposition want to hear an answer or not? The Acting Prime Minister has the call.