The One Nation defector went from being a bizarre political curiosity to a national disgrace on Tuesday night when he called for a "final solution" to the migration problem, a ban on Muslim immigration and a return to the White Australia policy dismantled by the Holt Government in 1966.

"While all Muslims are not terrorists, certainly all terrorists these days are Muslims, so why would anyone want to bring more of them here?" the Katter Australia Party member said in a speech that echoed his former leader, Pauline Hanson's, comeback speech to the Senate in September, 2016.

"We are in danger of being swamped by Muslims who bear a culture and ideology that is incompatible with our own," Hanson said on that occasion.

The One Nation leader, in a remarkable about face undoubtedly driven by her angst over losing a precious Senate spot to the KAP, was just one of many voices speaking out against Anning on Wednesday morning. She described his speech as appalling, saying it was "straight from the Goebbels handbook".

While senator after senator lined up to support a motion, brought by the ALP's Penny Wong, to reaffirm the house's commitment to multiculturalism and the abolition of the White Australia Policy, KAP leader Bob Katter made the worst political miss-step of his 44-year-long political career.

The colourful member for Kennedy came out swinging in support of his controversial new recruit.

"His speech was absolutely magnificent. It is everything his country should be doing. It was solid gold," Katter said.

The maverick MP, who has championed indigenous rights and is well known for going in to bat for rural battlers regardless of their point of origin, could have been expected to be more closely aligned with Senator Doug Cameron's affirmation people should be judged on the contribution they make, not where they come from.

Anning, a one-time grazier turned pub owner, is believed to have the weakest personal mandate of any politician in the history of the Federation.

He was elevated to the Senate despite only receiving 19 first preference votes as a One Nation Candidate after Malcolm Roberts, who was elected on just 77 primary votes, fell foul of the dual citizenship laws.

Anning nearly missed out on making the cut himself.  Concerns about his eligibility under section 44 were raised following reports he was the subject of bankruptcy proceedings involving the Bendigo and Adelaide Bank.

Katter, possibly blind sided by the degree of attention Anning's racist rant attracted, has made a serious error in not kicking him out of KAP.

His whole hearted endorsement of the maiden senator's repugnant views means there is now absolutely no point of difference between KAP and One Nation.

Freedom of speech is not a licence to peddle hatred. Fraser Anning's blunt diatribe will cause great distress to many members of our community, despite its emphatic and bipartisan rejection today. There should be no place in our parliament for such repugnant and ingorant statements.  Bob Katter would do well to reflect on what his endorsement of this divisive speech will do to his own reputation.