FSGs Out?

Tom Goldstein at SCOTUSblog seems to think the Federal Sentencing Guidelines will not be maintained in their current state, and based on the other blog news (How Appealing, Sentencing Law, Blakely Blog) that seems to be where this is headed. There will probably be some sort of middle ground, but the real question remains what are they going to do about all the cases that have already been decided or are currently on appeal? There are a lot of people in prison and on their way that will be directly and substantially affected by the court’s decision in this case.