What is the current problem in Northern Ireland that was triggered by Brexxit?

Question

I dont understand why brexxit should change anything for NI.

In: Other

Answer 1

Northern Ireland is part of the UK, it is included in brexit and as such is no longer part of the EU. The rest of the Island of Ireland called Ireland is part of the EU and not the UK.

Northern Ireland and Ireland have a treaty that says the border between them shall never be closed.

Northern Ireland is part of the UK, therefore there cant be a border between the UK and Northern Ireland

Half the reason for brexit was lack of imigration control in the EU, the UK wants a border with the EU.

These 3 things are mutualy exclusive. you can only ever pick 2 of them, which will logicaly preclude the 3rd