Earlier quoted context omitted.
Not clear how that's relevant to the comment you were replying to, unless you're suggesting that being jailed for minor controlled substance offenses is far more common in the US than the many other developed countries with similar laws?
Only 4.5% of US inmates are in prison for drug possession. I do wonder what the rate is for other countries. Shocking that 55% of inmates are in for violent crimes such as murder, rape, and manslaughter. source: https://felonvoting.procon.org/incarcerated-felon-population...
That would mean for 2mm prisoners there would be 1.1mm murderers, rapists, and manslaughterers. That seems like way too large a number to be realistic with the declining rate of murder, rape, and manslaughter.