Yes, if the allegations are true, it's worse than Nixon's actions, because Lerner and her acolytes went a bit further than
endeavors: "He has, acting personally and through his subordinated and agents, endeavored to obtain from the Internal Revenue Service, in violation of the constitutional rights of citizens, confidential information contained in income tax returns for purposes not authorized by law, and to cause, in violation of the constitutional rights of citizens, income tax audits or other income tax investigation to be initiated or conducted in a discriminatory manner." [1]
[1] Articles of Impeachment against Nixon
http://www.historyplace.com/unitedstates/impeachments/nixon....