I'm trying to point out that it is not at all easy to draw a line between what a President could be prosecuted for and what he should be prosecuted for.
I'm pretty sure one could find abuse of power committed by about every President.
Even Jefferson - he wasn't empowered to make the Louisiana Purchase, but did it anyway.
For a president to be able to conduct "official acts" in self interest, with no obvious limits, is quite concerning.
I think the president should enjoy a weak presumption that official acts are legitimate. But this goes way too far-- prohibiting consideration of motives, prohibiting using them as context or evidence in any other proceeding, and appearing to classify what would be horrible abuses as official acts.
Should Biden be prosecuted for that?
I don't know if that would be prosecutable. Is there a federal law against acting as though you have powers you do not while in office?
I suppose the difference is that having SEAL Team Six kill a political opponent on the President's orders seems like it should be classified as first-degree murder.
We neither want a world where every politician faces investigation for misdeeds after leaving office, nor one where apparently the president can act with impunity with no clear limits at all.
We need a middle path, where prosecution is rare and exceptional but true misdeeds can be punished (and deterred).
I feel like we left behind where we were slightly over-investigating and made a massive overcorrection to the other side for blatantly political reasons.