William Jefferson Clinton becomes the second U.S. president to be impeached. The House charges against Clinton are perjury and obstruction of justice. The impeachment is rooted in a series of events triggered by a lawsuit filed in 1994 by Paula Jones. She charged that Clinton made sexual advances on her when he was governor of Arkansas and she was a state employee. The suit led to an investigation of the president’s relationship with White House intern Monica S. Lewinsky. The Senate acquits Clinton on Feb. 12, 1999. William H. Rehnquist, chief justice of the United States, presides at the trial.