Comment: Also, to be even more clear, Clinton lied about having a consensual affair while in the office.  Which is arguably much more different than hiring people to break into some place to steal documents.  

While Clinton lying under oath about the affair was illegal, the sexual act itself did not break any specific laws.  There is no statutory law Clinton broke by having sexual relations with Monica.  This is why the Senate did not convict him, and why he was never charged with anything criminal.  He did, however, lose his license to practice law after that happened.