Read a story that if some unauthorized third party (e.g., an IRS employee) leaked it, that would be a felony. HOWEVER, unless the journalist who then publicized it were part of a conspiracy before the fact to steal this information, revealing it on TV or elsewhere would apparently NOT be a prosecutable offense.
Hmmm . . . Dems have been agitating for a special prosecutor to examine their imagined Trump/Russia electioneering ideas . . . maybe we should give them one to investigate leaking Trump tax data!