Mary Lou McDonald: Brexit presents 'constitutional earthquake' for Ireland

Sinn Féin leader Mary Lou McDonald has said that Brexit presents a "constitutional earthquake" for this country and is a "game-changer" for the future of the island of Ireland.

Ms McDonald also said that re-joining the Commonwealth is "a bad idea" but supporters of such a plan should be allowed to debate it openly and that Fine Gael should state clearly if they are in favour.