Senator George Mitchell of Waterville succeeded Senator Muskie, and becane Senate majority leader from 1988 until he retired in 1994. After his retirement, he was much respected for his attempts to work with both sides of the dispute to bring peace to Northern Ireland. | Senator George Mitchell of Waterville succeeded Senator Muskie, and becane Senate majority leader from 1988 until he retired in 1994. After his retirement, he was much respected for his attempts to work with both sides of the dispute to bring peace to Northern Ireland. |