The SCOTUS immunity decision is this simple:

https://drafts.interfluidity.com/2024/07/03/no-longer-a-liberal-democracy/index.html

1. "If a President orders the armed forces to shoot at protesters, it would still be an unlawful order. But Trump would enjoy absolute, unreviewable immunity for giving it."

2. "It would still be unlawful for his subordinates to act upon the order. But Trump could promise to pardon subordinates who act. He could fire subordinates who refuse."