> The US incarceration rate is at a 20 year low and keeps falling.

Technically true, but man oh man do we have a ways to go before the war on drugs is mitigated[1]. Based on the trend of the last ~10 years, we're due to reach 1980 levels of prison population in the 23rd century[2].

[1] https://commons.wikimedia.org/wiki/File:U.S._incarceration_r... [2] https://www.sentencingproject.org/publications/u-s-prison-po... (eye-balling Table 1)