Pauline Hanson has called on the prime minister to look seriously into temporarily banning Muslims from migrating to Australia - or, at the very least, more stringent vetting of those wanting to come to the country.
The One Nation leader has written to Malcolm Turnbull, compelled by the recent terrorist attacks in the UK, Europe and Melbourne.
Successive governments had failed to do what was needed to stop the growth and spread of Islamic terrorism, she said.
"If laws need to be changed then so be it; if you need to consider a US style ban, as proposed by United States President Donald Trump, then so be it," Senator Hanson wrote.
She also wants security forces to be given greater powers to deal with people on terror watch lists before they become violent.
On top of that, she suggests changing the way the Administrative Appeals Tribunal - an independent review body - works and its ability to overturn decisions regarding immigrants and refugees.
"If we continue to turn a blind eye to the radicalisation that is occurring in mosques throughout Australia then, I fear, we will soon see terrorist attacks to the degree that is happening in the United Kingdom and elsewhere around the world," Senator Hanson said.