In a Labor Day tweet, President Donald Trump took Attorney General Jeff Sessions to task over the indictments of two Republican congressmen — one for insider trading, the other for misusing campaign funds. “Two long running, Obama era, investigations of two very popular Republican Congressmen were brought to a well publicized charge, just ahead of the Mid-Terms, by the Jeff Sessions Justice Department. Two easy wins now in doubt because there is not enough time. Good job Jeff …”

CNN legal analyst Jeffrey Toobin responded on the network’s “New Day” program: “This tweet alone may be an impeachable offense,” because it is “so contrary to the traditions of the Department of Justice.”

Can a presidential tweet — and especially this tweet in particular — be an impeachable offense?

Short answer: Yes. Longer answer: The US Constitution envisions impeachment for two specific offenses (treason and bribery) and for other not specifically defined offenses (“other high Crimes and Misdemeanors”).

That second category does carry historical meaning, but the meaning is broad and, more importantly, determined politically and in the moment. Which means that pretty much anything can be an impeachable offense.

A “high crime” is not a crime of some particular severity. Rather, it is a crime committed by someone serving in a “high” government position that carries obligations above and beyond those binding a private citizen. The president of the United States is obviously such a person.

The first conviction handed down by the US Senate pursuant to impeachment in the House was of a federal judge for the “high crime” of chronic intoxication. Not a crime at all for you or for me, but antithetical to a judge’s obligation to not go mentally self-impaired in the performance of his duties.

President Andrew Johnson was impeached for, though not convicted of, “high crimes” including making speeches which “attempt[ed] to bring into disgrace, ridicule, hatred, contempt and reproach, the Congress of the United States.”

It’s not a stretch to put Trump’s tweet in the same category as those offenses. He’s a high official, publicly and corruptly calling on a government agency which he’s obligated to oversee honest operation of to give members of his party free passes on their own “high crimes” because there’s an election coming soon.

Republicans in Congress complained bitterly when former FBI director James Comey and the Obama Justice Department gave Hillary Clinton exactly such a free pass on her grossly negligent handling of classified information in the runup to the 2016 presidential election. Will congressional Republicans apply the same implied standard to Trump?

Yes, whether or not Congress deems Trump’s tweet a “high crime” is indeed a political question. It’s all about the votes – at the Capitol and, come November, at America’s polling places.

Thomas L. Knapp (Twitter: @thomaslknapp) is director and senior news analyst at the William Lloyd Garrison Center for Libertarian Advocacy Journalism (thegarrisoncenter.org). He lives and works in north