evidence: Supporters of this plan, including the nationalist Sinn Féin party, say it is necessary to protect the Good Friday Agreement. But unionist parties, including the Democratic Unionist Party (DUP), say this actually undermines the agreement because it separates them from the rest of the UK. [...] The framework has been formally adopted by the UK and the EU but the DUP has said it will take time before coming to a decision on whether to back the deal and potentially return to power-sharing government in Northern Ireland.