Ms SHARKIE (Mayo) (14:23): Mr Speaker, my question is to the Prime Minister. In last night's budget speech, the Treasurer announced $75 billion for national road infrastructure and financing, but only $3.1 billion of this money was earmarked for South Australia. Based on our population, an equitable share for South Australia would have seen us receive over $5 billion. Given South Australia is being short-changed on nation-building infrastructure, will the federal government at least guarantee that Australian steel will be used— Government members interjecting— The SPEAKER: The member for Mayo will resume her seat. Members on my right will cease interjecting. I was unable to hear the member the Mayo for the last 10 or 15 seconds. I will ask her to repeat question from the beginning. Ms SHARKIE: Thank you, Mr Speaker. In last night's budget speech, the Treasurer announced $75 billion for nation-building infrastructure and financing, but only $3.1 billion of this money was earmarked for South Australia. Based on our population, an equitable share for South Australia would have seen us receive more than $5 billion of infrastructure money. Given South Australia is being short-changed on nation-building infrastructure, will the federal government at least guarantee that Australian steel will be used in its national infrastructure projects, and in particular South Australian steel for its proposed rail projects?