https://www.supremecourt.gov/opinions/23pdf/23-939_e2pg.pdf
The ruling boils down to immunity in official acts vs. unofficial acts. The Supreme Court has basically made it impossible to have a trial for Trump before the 2024 election.
Trump, by appointing so many justices to the court, has probably skated on the issue of immunity. It’s a sham.
from the dissenting opinion:
Under the majority’s immunity regime, by contrast, the
President can commit crimes in the course of his job even
under circumstances in which no one thinks he has any excuse; the law simply does not apply to him. Unlike a de-
fendant who invokes an affirmative defense and relies on a
legal determination that there was a good reason for his
otherwise unlawful conduct, a former President invoking
immunity relies on the premise that he can do whatever he
wants, however he wants, so long as he uses his “ ‘official
power’ ” in doing so. Ante, at 19. In the former paradigm,
the President remains subject to law; in the latter, he is
above it.