Leo Varadkar also suggested separate courts system, police and health service.
The Tánaiste has suggested Northern Ireland would keep a separate parliament, courts, police and health service under a United Ireland.
Leo Varadkar was speaking at the Ireland's Future conference at the Three Arena yesterday, which saw speakers discuss what reunification might look like.
He was booed by a small number of the crowd.
Fianna Fáil TD Jim O'Callaghan also said the north may keep a separate parliament were it to come to pass.
Taoiseach Micheál Martin says reunification will be a slow process, and getting Stormont up and running needs to happen first:
The Taoiseach says the make-up of a United Ireland could take many forms.
But he says consensus is key:
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