If Malcolm Roberts is found to be ineligible, it could trigger a chain of events that could put Pauline Hanson's sister in the Senate.

One Nation senator received confirmation his citizenship been revoked six months after he nominated as a candidate.

Senator Roberts' office has also threatened to report Fairfax Media to police for "stalking" after reporters asked for a response to a fresh series of questions about his citizenship.

Brexit is nothing to worry about, Britain's foreign secretary told a Sydney dinner on Thursday night.

The bid for former minister Matt Canavan to stay in Parliament will rely heavily on the case that saw an independent MP lose his seat 25 years ago.

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Labor is heading for a showdown over energy policy.

The government won't release full findings from their public service efficiency reviews.

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"I'm not a policy-maker. That may very well be the policy that the United States arrives at."

Leading Labor figures are calling for confirmation Coalition MPs are eligible to sit in Parliament.

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One Nation senator's latest claim stands in stark contrast to previous public assertions he has only ever been an Australian citizen.

Former resources minister Matt Canavan says he has not breached section 44 of the constitution, but refused to release documents relating to his mother's application for his Italian citizenship.

''I have learned that you need to think about what you say and filter your words so that you don't hurt others.''

Some countries face 300 years of gender pay inequity, but Australia could see a pay gap until 2067.

Turnbull government calls on China to do more to pressure North Korea to drop its nuclear ambitions as reports for further nuclear tests circulate.

One Nation senator Malcolm Roberts is under mounting pressure to prove he's eligible to stay in Federal Parliament.

After losing his luggage, comparing the hongi to a headbutt and being upstaged by a rare lizard in New Zealand, Boris Johnson is pleased to be in Australia.

Australia's top spy has warned a 4000 kilometre-long cable could be torpedoed over Chinese firm Huawei's involvement.

Fears are growing that the dual citizenship crisis could take down other MPs, threatening the government's majority.

Reserve Bank governor Philip Lowe has attempted to hose down talk of a hike in interest rates, saying Australia won't be blindly following central banks overseas.

• ANALYSIS

Confusion over section 44 of the constitution threatens to obliterate confidence in the finely balanced 45th Parliament.

Australia's major banks fear a royal commission will hurt customers and investors, Anna Bligh has warned.

Federal-state tensions over water issues have escalated with South Australia demanding Barnaby Joyce, the federal water minister, drop his nomination of an irrigation lobbyist to the Murray Darling Basin Authority's board.

Barnaby Joyce says Matt Canavan's mother was "at her wit's end" that her son's promising political career had now stalled.

Could a gay or lesbian Australian reach the top of politics today?

A top NSW bureaucrat was on Tuesday refusing calls to stand down despite allegedly offering privileged access to government documents to irrigation lobbyists.

The Queensland senator is a close political ally of Barnaby Joyce and is seen as a rising star in the Nationals.

Immigration officials helped conduct interviews for possible family reunions from Nauru and Manus Island, the United Nations refugee agency has said, appearing to bolster its claim the Turnbull government was considering resettling some refugees.

The Australian Conservatives has raised three-quarters of a million dollars, primarily from grassroots supporters.

National Mental Health Commission chairman Allan Fels has called for a radical rethink of the National Disability Insurance Scheme.