Nationals senator Barry O'Sullivan has rejected suggestions he is in breach of the constitution after questions were raised over his eligibility to sit in the Senate - not because of his citizenship, but his business interests.
Adam Gartrell is the health and industrial relations correspondent for the Sydney Morning Herald and The Age, based in Parliament House
"There's a dark cloud hanging over the Parliament. We need to resolve it for the good and wellbeing of the body politic."
Controversial Greens senator Lee Rhiannon has been accused of misleading the producers of the ABC's Four Corners by falsely claiming she featured in footage of activists getting arrested at an anti-apartheid protest.
After days of silence, Justice Minister Michael Keenan has taken to social media to say he renounced his British citizenship in 2004, which he inherited from his father, before entering Parliament.
Plans from Labor and the Coalition would set a dangerous precedent of partisan referrals, setting the stage for a damaging free-for-all.
Penny Wong says she and her staff had no knowledge questions had been asked until Monday.
The Turnbull government could unilaterally refer four Labor MPs facing questions over dual citizenship to the High Court.
Julie Bishop's extraordinary press conference triggers diplomatic fight with Australia's closest neighbour.
Prime Minister Malcolm Turnbull has accused Bill Shorten of "conspiring with a foreign power" to steal government.
Malcolm Turnbull's government is hanging by a thread after dramatic revelations that Deputy Prime Minister Barnaby Joyce is a dual citizen.