The former VP and 2020 candidate’s plan for cannabis is the industry’s worst nightmare: It could blow up the system across the country.

No one person created America’s war on drugs. No individual is responsible for the accompanying manufactured crises of mass incarceration and impoverishment of working class communities of color. But in the same shamed strata as Richard Nixon and Nancy Reagan, in the view of many, you can find Joe Biden, the wobbly 2020 frontrunner and former vice president.

In his 40 years in the Senate, as is now well known, Biden was a key architect of harsh criminal penalties for nonviolent drug users. Undoing much of his own work was one way to make sense of a large part of the criminal justice plan his presidential campaign recently released. Finding a centrist’s safe-and-happy medium on weed in particular, Biden has not embraced legalization—a.k.a. commercialized, recreational pot use—but has claimed to back decriminalization, or removing at least most pot offenses from the criminal justice system.