Nick Xenophon will refer himself to the High Court and his political future is in doubt after the shock discovery he is a British overseas citizen.
Doug Dingwall The embattled agency endured another quarter of slowing work as its relocation drew closer.
Tom McIlroy The official residences of the Australian prime minister will have new oversight from an expert group.
Trivia and word buffs: test your knowledge with today's superquiz and Target.
Judith Ireland, James Massola Early on Monday morning, Barnaby Joyce paid a visit to Nationals senator John Williams at his Parliament House office.
Noel Towell Gay marriage vote an "entirely inappropriate use" of money meant for emergencies, says former top public servant.
Tom McIlroy The Australian Pesticides and Veterinary Medicines Authority faces a "root cause" review of its operational performance.
Peter Hartcher The survival prospects for the Turnbull government continue to narrow, with another key crossbench member withdrawing support.
Amy Remeikis Nick Xenophon has blamed political opponents for fresh doubts over his citizenship status, which could see him dealt out of Parliament, as the Turnbull government fights for its political life.
Noel Towell "How can this possibly end well?" ABS insider asks.