Since its inception, the Drug Enforcement Administration's Domestic Cannabis Eradication/Suppression Program has spent roughly $200 million eradicating "ditchweed," or feral marijuana plants that contain no THC (the chemical in marijuana that gets you high). Even though feral marijuana can't give you a buzz, for years the DEA used it to hype the specter of domestic pot production and pad out its annual DCE/SP report. How much padding, exactly? Roughly 98 percent of the marijuana the DEA destroys in a given year is worthless as a drug (though not as industrial hemp, outlawed since the 1930s).