The Australian government could fall.
Barnaby Joyce, the vice-PM of Australia, discovered, to his dismay, that he has a double nationality.
Australian constitution forbids anyone with a double nationality from holding any public function.
Joyce's father migrated to Australia from New Zealand in 1947. Back then, Australia and New Zealand were still the same country, to be more precise, they were part of the UK. His father never thought it nescessary to register himself as Australian after Australia and new Zealand separated from the UK and each other.
Now, after all these years, Barnaby Joyce found out that his father's New Zealand nationality was automatically passed onto him, making him a person with double nationality.
It is unsure yet if he will be forced to resign. If so, it will collapse the government, because they only have a majority of 1 seat.
I will elaborate on this.
Lately, under our constitution, people have realised that there's a section that prevents dual-nationals from holding federal office. Thus far, those affected are:
Scott Ludlam, of the Greens Party; widely popular with the under 30s, especially that of the left.
Larissa Waters, also of the Greens Party; the deputy leader of the party behind Richard Di Natale.
Matthew Canavan, of the Liberal Party; his removal is of more interest to this argument. Canavan is the "Minister for Resources and Northern Australia", which basically amounts to "hey bro you good with talking to miners?"
These three were found to have:
Ludlam: New Zealand/Australian dual citizenship, born in NZ, left NZ aged 3 with his family, settled in Australia age 8. Ludlam discovered his dual citizenship status and voluntarily resigned from the senate, prompting numerous members to make clarifications on their status. Ludlam had previously taken a period of convalescence from the Senate after suffering from depression and anxiety.
Waters: Canadian/Australian dual citizenship, born in Winnipeg, Manitoba, and emigrated to Australia quite early. Shortly after Ludlam's resignation, many of the Greens checked their statuses, and Waters found she also possessed dual citizenship, and voluntarily resigned from the Senate.
Canavan: Italian/Australian dual citizenship, born in Australia to an Italian mother, who told him he had Italian citizenship on the basis of being an Italian citizen abroad in 2006. As he was unaware of this decision, the Government is choosing to believe he is not stricken from the record under Section 44. The High Court will decide on Canavan's issue.
Joyce: New Zealand/Australian dual citizenship, born NZ, lived in Australia most of his life. Joyce is a controversial figure, the deputy Prime Minister, head of the Nationals Party, which is a junior partner in the Liberal-National Coalition; the Nationals are ostensibly a rural-focused party for the farmers, but tend to be filled with arch-conservatives who do little.
Regarding Joyce's migration: Australia and New Zealand were not the same country in 1947. Provisions were made in Australia's constitution to allow NZ to join at any point as a state equal in level to the other colonies of Australia; while there was initial interest, it faded quickly.
Australia federated in 1901, NZ has no fixed true independence day, but the date given is varied between the New Zealand Constitution Act (Britain) of 1852, which while still being a colony, made NZ for all intents and purposes its own independent nation; 1919 saw NZ given a seat at the League of Nations; 1926's Balfour Declarations defined Britain's colonies as "equal in status"; the Statute of Westminster in 1931 saw initial hostility from Australia, NZ and Newfoundland (later Canada), though Australia and Canada both made it law later on; NZ did not adopt the Statute of Westminster until 1947.
Until 1958, Australians and New Zealanders (and I believe Canadians, though I'm not certain) were eligible to claim British citizenship. Australians and New Zealanders until about 1970 considered UK to be "home" or the "mother/fatherland"; and indeed at around this time, there were movements to reduce Britain's ability to legislate with regard to us even further.
Anyway; Joyce's status has also been referred to the High Court, if either he or Canavan are removed by the High Court, then the Labor Party or Liberal Party must find members to assist in forming a minority government, as has happened several times since the first election of Rudd in 2008.
If Canavan's status is found to be valid as he was unaware of being made a "citizen abroad", then the country will watch with bated breath to see what happens to Joyce. Joyce's status is considerably less clear-cut than Canavan; while we have numerous free movement laws between NZ and Australia, Section 44 still considers them a "foreign power" for purposes of federal office.