Opposition Leader Angus Taylor has unveiled a plan to boot migrants from the nation if they do not exhibit "Australian values", while also flagging an intention to shut the door on some asylum seekers if the coalition is elected to government.
The Australian values statement would be enshrined into law and a prescribed set of behaviours that constitute a breach would be established, he said.
On Wednesday, Mr Taylor gave the example of the Bondi terror attackers in December as clearly violating the nation's values, although one of the father-son duo who carried out the mass shooting was an Australian citizen.
"We've seen behaviour in recent times which is clearly in breach of the Australian values statement," he told reporters in Brisbane.
"No doubt we'll see more because this government has lost control of its immigration policy."
Criticism of the plan has been widespread, with senior Labor figures, human rights groups and immigration experts arguing prosecuting a breach of values will be difficult.
Under the plan, anyone applying for a visa, including tourists, would have to submit their social media accounts for strict vetting, mimicking a rule put in place by US President Donald Trump in late 2025.
But former immigration department deputy secretary Abul Rizvi said it would be a huge - and costly - task to screen the 500,000 visa applications Australia received each month.
"Mr Taylor appears to be proposing to do (screening) on a blanket level," he told AAP.
"Will that mean visa processing offices spend large amounts of time looking through people's holiday snaps?
"If you went down that path, you would waste a phenomenal amount of taxpayer money achieving very little."
Opposition home affairs spokesman Jonno Duniam said the coalition was prepared to legislate the changes, even if it was a difficult task.
Treasurer Jim Chalmers called the plan a "strange and pretty disappointing" contribution to the migration debate.
"What he's doing is plagiarising the politics and the rhetoric of other countries and another time," he said.
"What he's doing is playing more to the internal politics of the three right-wing parties than he is concerned with the national interest."
The coalition's plan would also restrict access to the first-home buyers assistance scheme, which allows buyers to put down a five per cent deposit, to Australian citizens.
"If we're going to exclude permanent residents from various programs, we need to think through what we are trying to achieve," Mr Rizvi said.
"Given that permanent residents are also taxpayers, why are they being excluded?"
The policy was seen as an attempt to claw back ground from Pauline Hanson's populist One Nation, which has hoovered up disillusioned Liberal and Nationals voters in the aftermath of the coalition's worst federal election defeat.
The opposition has previously tried to repair relations with the Chinese-Australian community, with Liberal Senator Jane Hume issuing an apology after she said "Chinese spies" were volunteering for Labor in a clip that went viral on WeChat.
However, Mr Taylor's latest speech only added to the diaspora's concerns.
"I feel like nothing has changed since the last election," Chinese Community Council of Australia's Victorian chapter committee member Eric Yan Ma told AAP.
The policy also emboldened Nazis and white supremacists, and paved the way for hate against diverse communities, Race Discrimination Commissioner Giridharan Sivaraman warned.
"Whenever migrants are singled out, dehumanised or blamed, it gives permission for racism towards those people," he said.
"Often the only signal as to whether someone is a migrant is the colour of their skin or their accent or their name, so it taps into a deep undercurrent of racism that is still very much flowing in this country."
