In one of the most inflammatory speeches to Australian Parliament for decades, Senator Anning in August praised the White Australia Policy and called for a plebiscite as "the final solution to the immigration problem". Senator Anning took aim at Muslim migrants in particular, claiming they had proven to be the least able to assimilate and integrate into Australian society and other countries. Loading At the time, Mr Katter backed his senator "1000 per cent" and praised the speech as "solid gold", but the pair have been at loggerheads ever since. Announcing the decision to disendorse his only senator on Thursday afternoon, the KAP leader said he cautioned Senator Anning not to proceed with the plebiscite bill.

"Warnings had been given, very clear-cut warnings. Then that bill came out I just exploded with rage," he said. "After being told again and again and again, he puts it in the house without any permission from anyone or any clearance from anyone. "Clearly Fraser wants to continue his crusade and we think it is best to give him this freedom." Mr Katter described Senator Anning as a friend, and again defended the "final solution" speech on Thursday. "Ninety-nine per cent of what Senator Anning has been saying is solid gold. However, there is one per cent of what he is saying that is totally unacceptable," he said.