How the Supreme Court could decide Trump’s blockbuster fight for immunity

The Supreme Court’s most closely watched dispute this year – a case questioning whether former President Donald Trump may claim immunity from federal election subversion charges – also has the potential to be one of the hardest to parse for meaning in real time.

In between Trump’s initial demand for total immunity and an appeals court ruling earlier this year that found he’s entitled to no protection at all is a murky gap with massive practical implications for whether he can be tried before the November election.

At issue is special counsel...