This is a good article

And good news. Crack users are getting less time in prison. That means there will be 3800 fewer prisoners in 15 years, which is a drop in the bucket of prison crowding, but a step in the right direction. Crack offenders will spend a little more than 8 years in prison, on average, rather than 10 years. Again, piecemeal reform, but a step in the right direction.

Update: bean has more. And a Yeats reference or two.