2017 Parliamentary Eligibility Crisis

2017-18 Citizenship Crisis
In 2017, the eligibility of a number of Australian members of Parliament to be elected to the Parliament of Australia was called into question. With an increasing number of political casualties, it became a protracted political event, referred to by some as a constitutional crisis. The situation arose primarily due to section 44(i) of the Australian Constitution, which prohibits members of either house from having allegiance to a foreign power. On that basis, the High Court of Australia had previously held that someone who holds dual citizenship is ineligible for election unless they have taken "reasonable steps" to renounce the foreign citizenship before nomination.

Seven parliamentarians were referred to the high court to determine their eligibility through trial. These parliamentarians were:
 * Senator Scott Ludlam (Greens)
 * Senator Larissa Waters (Greens)
 * Senator Matt Canavan (Liberal National Party) [Resources Minister]
 * Barnaby Joyce (Liberal National Party) [Deputy Prime Minister]
 * Senator Malcolm Roberts (One Nation)
 * Fiona Nash (National Party)
 * Nick Xenophon (Nick Xenophon Team)