Coalition Senator James Paterson says the Senate has been acting “undignified” today after a blow-up between Fatima Payman and Pauline Hanson.

Independent Fatima Payman has angrily accused the One Nation leader of racism, for questioning her eligibility to sit in Parliament.

Pauline Hanson claims Senator Payman may not have properly renounced her Afghan citizenship after she fled the Taliban as a child.