Prime Minister Anthony Albanese has launched one of his strongest personal attacks yet on One Nation Senator Malcolm Roberts, declaring the Queensland parliamentarian’s views are “not worthy of being a senator” after a series of controversial comments and conspiracy-related statements resurfaced during a politically charged week.

The latest dispute centres on a collection of public remarks made by Senator Roberts over recent years, including praise for American conspiracy theorist Alex Jones, comments questioning widely accepted narratives surrounding major public events, and claims about COVID-19 vaccines that contradict established medical evidence.

The renewed scrutiny has placed fresh pressure on One Nation as the party attempts to distance itself from several controversial statements while maintaining that individual parliamentarians are entitled to express personal opinions.

Speaking at a press conference on Saturday, Mr Albanese said Senator Roberts had established a long record of promoting conspiracy theories that he believed were both false and potentially harmful.

“He has had a history of promoting conspiracy theories, saying things that were simply not true,” the Prime Minister said.

“In many cases, saying things are dangerous such as being anti-vaccination.”

Mr Albanese also criticised remarks in which Senator Roberts previously described the United States Government as a “terrorist organisation”, noting that the United States remains Australia’s closest strategic ally.

“This is a guy who’s been elected and re-elected and endorsed and re-endorsed multiple times by Pauline Hanson and One Nation,” the Prime Minister said.

He then delivered his strongest criticism.

“His views are not worthy of being a senator, but he’s elected.”

Mr Albanese argued the controversy demonstrated what he described as the risks voters assume when supporting candidates on the political fringe.

“This is the risk that people take when they vote for people who are on the fringes of politics.

“In this case, someone who has had a long history of supporting conspiracies.”

The immediate catalyst for the latest political confrontation was renewed attention on a 2024 interview between Senator Roberts and American broadcaster Alex Jones on The Alex Jones Show, broadcast through the Infowars platform.

Jones is one of the world’s most widely known conspiracy theorists and has become internationally controversial for repeatedly promoting false claims about major events, including the 2012 Sandy Hook school shooting in the United States. Multiple US courts have found Jones liable for defaming families of Sandy Hook victims through repeated false statements that the massacre had been staged. He has since been ordered to pay damages exceeding US$1 billion. Those court findings have become central to public scrutiny of politicians or commentators who associate with him.

During the 2024 interview, Senator Roberts thanked Jones for his work and described him as “a beacon of hope around the world”.

He also referred to the United States Government as a “terrorist organisation” during the discussion, comments that have attracted renewed criticism following their circulation on social media this week.

The interview itself is not new, but its re-emergence has coincided with broader political debate surrounding misinformation, public trust and the responsibilities of elected representatives.

Additional attention has also focused on comments Senator Roberts made earlier this year regarding the Bondi Junction mass stabbing.

During an interview with YouTuber Lisa Jane Spencer, Roberts was asked whether he believed the April 2024 Bondi attack—which claimed seven lives, including that of the offender—could have been a “false flag” operation.

Rather than dismissing the suggestion outright, Senator Roberts responded that he lacked sufficient evidence.

“I haven’t got the evidence. I doubt whether it was a false flag,” he said.

He continued by saying he was “not ruling it out” because, in his view, any conclusion should be based on evidence rather than assumptions.

The remarks generated immediate criticism because Australian police investigations had already concluded that the attacker acted alone and that there was no evidence supporting conspiracy theories surrounding the incident.

Following criticism, Senator Roberts later clarified his position during a media conference.

“First of all, it’s an absurd proposition,” he said.

“Second thing is that I reinforce the fact that I make decisions and statements based on data, and I don’t have data.”

Even so, critics argued that declining to categorically reject unsupported conspiracy theories risked lending credibility to claims for which there is no verified evidence.

The controversy expanded further after reports highlighted earlier comments Roberts made during the COVID-19 pandemic.

According to archived livestream footage reported by the ABC, Senator Roberts claimed approximately half of pregnant women who received COVID-19 vaccinations suffered miscarriages.

That assertion conflicts with extensive medical research conducted in Australia and internationally.

Large-scale studies published during and after the pandemic found no evidence that approved COVID-19 vaccines increased miscarriage rates among pregnant women. Australian health authorities, including the Australian Technical Advisory Group on Immunisation (ATAGI), the Department of Health and Aged Care, and international organisations such as the World Health Organization, have consistently advised that COVID-19 vaccination is safe during pregnancy and helps reduce the risk of severe illness for both mother and baby.

Medical experts have repeatedly warned that misinformation surrounding vaccination can discourage people from seeking evidence-based healthcare and undermine public confidence in immunisation programs.

The political fallout has also exposed differing approaches within One Nation itself.

Federal MP Barnaby Joyce was asked earlier this week whether he supported Senator Roberts’ praise of Alex Jones and his broader comments.

Mr Joyce declined to defend the specific remarks.

“I’m not going to carpet Malcolm Roberts over his praise of Jones,” he said during an interview with Sky News.

However, Joyce also made clear that he personally rejected several of the conspiracy claims associated with Jones.

“I do not believe for one second that Sandy Hook was a false flag, obviously nor was Bondi, and I don’t believe that the United States is a terrorist organisation.”

He argued that One Nation allows members considerable freedom to express individual opinions and said Roberts’ comments should not automatically be interpreted as official party policy.

“Just because one member of One Nation says something, it doesn’t mean it’s policy, just like any member of the backbench in the Labor Party.”

Pressed repeatedly about Roberts’ comments, Joyce declined to engage in a personal dispute with his colleague.

“I’m not going to go into some sort of personal affray,” he said.

Instead, he reiterated that the views expressed during the Alex Jones interview were not positions adopted by the party as a whole.

The latest controversy arrives at a politically sensitive time for One Nation.

The party has sought to broaden its appeal beyond its traditional protest-vote base by focusing heavily on cost-of-living pressures, energy policy, housing affordability and migration levels. However, repeated attention on controversial statements by individual members has periodically complicated that strategy.

For the Albanese Government, the issue also aligns with its broader criticism of misinformation and political extremism.

Labor ministers have increasingly argued that elected representatives have a responsibility to avoid amplifying unsupported claims, particularly those involving public health, national security or major criminal events where misinformation may cause additional distress to victims and families.

The dispute reflects a wider international trend in democratic politics, where conspiracy theories increasingly circulate through podcasts, livestreams and social media rather than traditional media outlets.

Researchers studying political communication have observed that online platforms enable controversial narratives to spread rapidly across national borders, often reaching audiences well beyond their original source. Governments in Australia and elsewhere have consequently placed greater emphasis on media literacy, fact-checking initiatives and public education while continuing to balance those efforts against protections for freedom of political expression.

As Parliament prepares to resume, the exchange between Anthony Albanese and Malcolm Roberts underscores the increasingly sharp divide between Australia’s major parties and minor populist movements over the role of evidence, expertise and political rhetoric.

Whether the renewed attention affects public support for One Nation remains uncertain. However, the controversy has again placed Senator Roberts’ past comments under national scrutiny while providing Labor with another opportunity to argue that conspiracy-driven politics has no place in Australia’s Parliament.