Murder has no statute of limitations.
Nothing can really be done in the case because everyone involved is dead.
The FBI reopening it won’t change it.
And murder is not a federal crime. So why are the federals investigating.
Of course, the alleged crimes do violate many federal civil rights laws - if the crimes were to happen today.
Can today's federal protections be applied retroactively to 1956 - sort of ex post facto?
The announcement that the federal government is “reopening” the investigation will sound good to many people. And many people will look good as they talk about doing something.
It may even shift a few votes toward the person who hires and fires the attorney general. And that ain't all bad.