Martin McGuiness has welcomed today's court decision that the British Prime Minister will not be able to start the process of leaving the EU without putting it to Parliament first.
The High Court has ruled in favour of campaigners who said MPs should have a vote on it.
Theresa May has said she will appeal against the decision, and still aims to trigger Article 50 by the end of March.
The North's Deputy First Minister Martin McGuiness was asked if his party might sit in the Commons in order to bolster numbers in a Brexit vote.
"Our position is very clear...Decisions about the furture of the people who live on this island need to be taken here by our administration in the North and with the Irish Government," he said.
Meanwhile, the North's First Minister Arlene Foster said the ruling was "a process issue".
"Brexit is still going to happen…Essentially this is a process issue. The British people want us to go in a particular direction, and that's the direction in which the Prime Minister is taking us," she said.