If for some reason that hypothetical situation does arise, in good faith, there are other ways to take care of it.
A president needs to make a quick decision. Time is of the essence. Democracy is slow. They believe that plan A is the best course of action for the country, the people, and the world. They go with the possibly illegal plan A. The rule of law is as strong as we would like, so the justice system goes to work investigating this crime.
Even if all this happens, there are so so many stops along the way where this situation can be rectified appropriately without allowing future presidents to believe they are above the law. Independent federal prosecutors might decide not to go forward after investigating. A grand jury might decide not to go forward once they understand the president’s actions and good faith intent. Democracy might take action and congress could adjust the law after the fact. The president could end up on trial and a jury could say not guilty after hearing the case. Many judges, and perhaps supreme court justices, might have a say.
Any of those other “outs” are perfectly OK. They are all within the realm of justice and democracy working as we are taught in school that it should be working on paper. They aren’t get out of jail free cards. They aren’t decided by a single person with a pardon.
So the argument I’m making is that we shouldn’t be afraid of threatening the president with the sword of justice if the scales of justice are working properly. It should be reasonable to expect that even the best president, by necessity, will see themselves investigated and possibly prosecuted by the justice system at least a few times. But as long as they are acting in good faith in the interests of the people, they should have nothing to fear from that. In fact, they should welcome the investigation as they should expect exoneration. Going through those procedures will keep presidential power in check even if they do not result in guilty verdicts and sentences.
This reminds me again of something I was just talking about yesterday with Rym. I heard something recently from a European (I think French) business person. I can’t remember exactly where I heard it, or I would link it. The idea was that they were puzzled about why American business people wanted less regulation. When there is less regulation you constantly have to worry about ethics and not doing evil, see also Google. And if you do evil, even willingly, and have a conscience, you have to sleep at night somehow.
But if business is heavily and well regulated, and those regulations are enforced, then you are free. You can just do whatever. Color whatever color you like within the lines. Be as evil a business person as you want to be as long as you follow the rules. Be as evil as you like in the board game, just don’t cheat. Never have to worry that you were evil or wrong in what you did. Rest easy and sleep well. A strong and fair justice system can actually reduce fear and anxiety.