Which statement best explains why John Dean’s testimony was so important during the Watergate investigations? Dean was a member of CREEP and created the plan to reelect Nixon. Dean was a lawyer who could clearly describe how the Nixon administration broke the law. Dean was able to testify to dozens of conversations with Nixon about the break-in and cover-up. Dean was not involved in the Watergate break-in, so he was able to have an impartial perspective.