Sinn Féin vice president Michelle O'Neill has said she will brief senior US politicians on the need to restore powersharing at Stormont during a visit to Washington.
Ms O'Neill will travel to the US on Monday for a series of meetings with Congressional members and Irish American leaders.
She said the US remained a "critical partner" for peace and progress in Northern Ireland but added that the Conservative Government had proved it was an "untrustworthy partner".
