[PurpleBoxDragon]

The 48% is about federal prisons, the 16% is about state prisons. Generally the 'bad' crimes we think of (murder and the like) are state offenses, not federal offenses, which is why you see so many more in the state level for something worse than drugs. Drugs is one of the few crimes punished consistently on both a state and federal level. You could go to federal prison for murder, but it generally requires something special about the case for the state to not handle it.

>So I'd say the parent is right that 16% are in for drugs and would be set free if drugs were legal. The others in that 48% wouldn't be.

Both would be set free. 16% from state prisons, 48% from federal prisons. These are two separate prison populations.