PAULINE HANSON PRESSER
One Nation is split over whether to support company tax cuts, with Pauline Hanson accusing one of her senators of selling himself out to the government.
Brian Burston is supporting the government's $35.6 billion corporate tax cut plan, in a direct challenge to his leader's authority.
The NSW senator said he was blindsided when Senator Hanson withdrew support for the cuts after initially agreeing to back them.
He plans to honour the deal struck in March with Finance Minister Mathias Cormann.
"I don't want to cause any angst or division in One Nation, but once I make a handshake with somebody, that's it. I stick to my word," Senator Burston told The Australian newspaper on Thursday.
But Senator Hanson said she spoke to Senator Burston last Monday before the party's change of mind was announced, and he agreed to withdraw support for the cuts.
She said it appeared Senator Burston changed his mind in return for money to deal with PFAS contamination on properties near air force bases.
"He feels that he did a deal with Minister Cormann, and he's sold himself out for $55 million in PFAS," Senator Hanson told reporters on Thursday.
"(But) he is a member of the party and he is still a representative of One Nation."
The May budget included an amount of $73.1 million to deal with the defence site PFAS chemical contamination issue.
Senator Hanson said the preselection process for the next election is not yet finalised, which puts a cloud over Senator Burston's position at the top of the One Nation Senate ticket for NSW.
"He's said he's not doing a dummy spit, he said he's not walking away from One Nation," she said.
Senator Cormann insisted the government remained committed to the deal it struck with One Nation.
"The government is very appreciative of the fact that Senator Burston has announced that he will stick to the agreement that was reached," the minister told reporters.
The government has 31 senators and needs 39 votes to pass its legislation, if Labor doesn't decide to back it.
Mr Shorten said Labor would oppose the company tax cuts all the way to the next election.
"I notice that yet again Pauline Hanson's One Nation appears to be split and chaotic," Mr Shorten told reporters.
"The reality is that if you vote One Nation you're voting for corporate tax cuts."
Senator Burston has removed reference to One Nation on his social media accounts.