 In some cases, the president is absolutely immune. In other cases, it depends, but the court set down strict rules. Prosecutors may not even inquire into a president's motive for an official act. They can still pursue an indictment for an ex-president's private conduct, but they may not introduce any evidence of his official acts. This ruling relates to the former president's indictment for his effort to overturn his 2020 election defeat, but the court...