Make them fill out an apology in triplicate long form and then use it against them in court.
Excellent question. Here's one of the Articles in the planned Impeachment of Richard Nixon:
1.He has, acting personally and through his subordinates and agents, endeavoured to obtain from the Internal Revenue Service, in violation of the constitutional rights of citizens, confidential information contained in income tax returns for purposed not authorized by law, and to cause, in violation of the constitutional rights of citizens, income tax audits or other income tax investigations to be intitiated or conducted in a discriminatory manner.
Bill Clinton made it a pastime, so siccing the IRS on opponents cannot possibly be a crime.
Apology doesn’t cut it.
NO, it is illegal to use the IRS in this way... the whole organization needs to be hauled up to congress and bitch-slapped in public, and those that gave the orders to single out political opponents of Obama for harassment need to go to jail... PERIOD!