A travel log appears to show senator Nick Xenophon's father came to Australia on a British passport. "All I can do is check and release whatever I get," he said. "Whatever happens, happens. "We are trying to get some further information, we are trying to get some clarity. Hopefully we get it in the early hours of Saturday morning." Senator Xenophon said if it was confirmed he had British citizenship by descent, he would not resign.

"Media companies large and small are under a great deal of pressure": Senator Nick Xenophon. Credit:Andrew Meares "It has to go to the High Court," he said. "You let it go to the High Court, that is what you do. That is the appropriate thing to do, I think." At a later press conference, Senator Xenophon believed he had become embroiled in the citizenship saga by political opponents, pointing the finger at the Labor Party. "I consider I have renounced in terms of Cyprus and Greece, and there is now this technical issue, which some of my political opponents are taunting me in the corridors saying that they are going to get me. It is really quite pathetic," he said.

"…I have been told that it is the opposition. I am not complaining about it, both sides hate me so one party is going to do it, eventually – I wasn't aware of it at all, I was actually quite shocked when it was raised with me at the end of last week and all I can do is be as open as possible, writing to the UK Home Office, contacting the UK High Commission and then it has to be looked at in the context of the constitution. "But this is really turning into a train wreck for the Federal Parliament. No wonder people think so little of politicians." The Nationals leadership has been thrown into disarray by the constitutional crisis, with Deputy Prime Minister Barnaby Joyce and his deputy, Fiona Nash, found to have received dual citizenship by descent, at birth. Other MPs caught up in the saga include One Nation senator Malcolm Roberts, former cabinet minister Matt Canavan, and former Greens senators Scott Ludlam and Larissa Waters. While Senator Canavan stepped down from the cabinet, Mr Joyce and Senator Nash have maintained their positions.

Attorney-General George Brandis on Friday said he regrets Senator Canavan's resignation from his ministry, which he said was done as a "precautionary step" after his story was made public. He also defended the decision to withhold announcing Senator Nash's citizenship issues for almost a week. The NSW senator received advice from the British Home Office on Monday she was a dual citizen through her Scottish-born father, but did not announce it to Parliament until the dying moments of the last sitting fortnight. Senator Brandis said he and Prime Minister Malcolm Turnbull were advised on Monday night of the situation but the government wanted to wait for official confirmation. Senator Nash received confirmation of her dual citizenship from Britain at 5.40am on Thursday, but the government did not act until the Solicitor-General's advice confirming that came through at 5pm.

An urgent sub-committee of cabinet was called, where Mr Turnbull, Senator Brandis and Foreign Minister Julie Bishop decided to refer the matter to the High Court. Senator Nash made her announcement to the Parliament just under an hour later. Loading The government remains confident its three MPs will be found to eligible to remain in Parliament. Follow us on Facebook