 Complete the following phrase:  Working under committee chairman Sam Ervin, the committee played a pivotal role in gathering evidence that would lead to the indictment of forty administration officials and the conviction of several of Richard Nixons aides for obstruction of justice and other crimes. Its revelations later prompted the impeachment process against Nixon himself, which featured the introduction of three articles of impeachment by the Democratic-led House Committee on the Judiciary. Watergate led to 