One Nation leader Pauline Hanson has sparked a new discussion about the resurgence of a 'White Australia' policy — a controversial series of laws that discriminated against non-European migrants Taylor says the policy does not discriminate based on race, religion, or nationality.Demographer Liz Allen said the spectre of the White Australia policy still looms over Australia — for example, in immigration tests, and the fact that Australia's public holidays don't reflect a multicultural nation."Australia is stuck in the past, and we still have this looming rhetoric that Australia is a white country, even though we have a Blak history, and the nation is geographically in the Asian region," she said.She believes at the heart of the debate is the fact 'Australian values' aren't officially defined."We have been so afraid of not fitting in and so desiring of assimilation in this country throughout our history, that we've never ever sat down as a nation and had an earnest reflection on what it means to be Australian and what is Australian identity," she told SBS News.Cully says reverting to a White Australia policy would seem "almost impossible" given the decades of legal and administrative changes around universal visa entry