Mr SHORTEN (Maribyrnong—Leader of the Opposition) (14:01): My question is to the Prime Minister. Tomorrow, for the first time in Australia's history, gross debt will crash through half a trillion dollars. So how can the Prime Minister possibly justify giving millionaires a tax cut— Honourable members interjecting— The SPEAKER: The Leader of the Opposition will resume his seat. Members on both sides will cease interjecting. Mr Dutton interjecting— The SPEAKER: The Minister for Immigration and Border Protection will not interject loudly as questions are asked or, for that matter, at any time. I am cautioning him right now, at the start of question time. I cannot hear the question. Mr Christensen interjecting— The SPEAKER: The member for Dawson is warned! The Leader of the Opposition will begin his question again. Mr SHORTEN: My question is to the Prime Minister. Tomorrow, for the first time in Australia's history, gross debt will crash through half a trillion dollars. So how can the Prime Minister possibly justify giving millionaires a $16,400 tax cut in just 16 days time?