On Thursday‚ the U.S. Supreme Court will hear Donald Trump’s arguments that he is immune from prosecution for his efforts to steal the 2020 presidential election. It is likely that all — or nearly all — of the justices will agree that a former president who attempted to seize power and remain in office illegally can be prosecuted. I suspect that some justices may also wish to clarify whether doctrines of presidential immunity might apply in other contexts — for example‚ to a president’s actions...