Now Donald Trump has tweet-threatened the FBI director he just fired that he will reveal previously secret tapes of their conversations. James Comey says, essentially, "bring 'em on."
Richard Nixon's efforts to deny and then retain control of the tapes led to the legal crisis that would be labeled the Saturday Night Massacre when Justice Department leaders (Republicans themselves) resigned rather than fire the special prosecutor who sought a ruling that Nixon must give over custody of these records. The long unraveling of Nixon's defenses lasted almost another year, but as transcripts of taped conversations revealed his direct involvement in illegal acts of political chicanery, he eventually chose to resign rather than be the first president removed from office by impeachment.
Many historians think Nixon would have weathered the storm and served out his term without the tapes Butterfield revealed.
Subsequent Presidents have sometimes taped themselves. The Washington Post (after all this was their great journalistic coup) provides a solid history of Presidential taping, as well of Donald Trump's pre-presidential delight in recording his own utterances.
I imagine Trump, and his enablers, assume he is not subject to these rules. Will Republican-controlled investigating committees go along with shielding Trump from producing the conversations he himself has revealed? Or are they just doormats, willing to go along with whatever lawless acts Trump commits -- all so as to strip healthcare from millions to give the One Percent a big tax break?
This is where we are. Resist and protect much.