What is the connection between POTUS & the Presidents of the United States?

POTUS

The answer is simple.

Note: There is no connection between POT, legalization of marijuana, and POTUS. While discussing the topic of legalization of marijuana, it becomes essential to look at the following data pertaining to economic and treatment impact coming out of various addictions.

FYI: https://www.nber.org/reporter/winter05/pacula.html

2001 DATA

* Data downloaded from http://www.ahcpr.gov/data/hcup/

By the way, which word would you like to be connected to, "Heroine" or "Heroin"?