While it would be hilarious to watch the conservatives tie themselves into knots trying to figure out a way to make it illegal for Obama to do that while also making it fine for Trump that would ultimately be a very bad thing.

First it would add legitimacy to Trumps run, not that a lack of that would stop him, but why hand him free ammunition.

Second it would massively energize the Republican base, because while some may be tired of Trump, they absolutely loath Obama and would vote in large numbers for Trump just to deny Obama any possible chance of winning.

Third, Obama burned a lot of bridges during his two terms and is very much a figure head of the old guard Democrats that are just now losing their grip on the DNC to the actual progressives in the party. Bringing Obama back would be a blow to the progressive wing of the party that we most desperately need in power. Further a lot of Democrat voters soured somewhat on Obama, particularly in his second term, I’m not convinced having him on a ballot would bring more Democrats to the polls than the Republicans it almost certainly would.

Even if he died he should still be tried posthumously, if only to give his victims closure, claw back some of the money he’s stolen for those victims, and to insure his legacy as the most criminal president of the US is properly recorded. It will also be important for the cases against his collaborators.