Chuck Rosenberg, acting head of the Drug Enforcement Administration (DEA), made highly offensive comments calling medical marijuana a "joke." While it's nothing new for drug war bureaucrats to oppose sensible marijuana policies, Rosenberg's comments go way too far. Medical marijuana is not a "joke" to the millions of seriously ill patients in a growing number of states who use it legally in accordance with doctors' recommendations. It is not a "joke" to the growing number of prominent medical organizations -- American Nurses Association, American College of Physicians, American Academy of Family Physicians, for example -- who know that cannabis has real and proven medical benefits. And it's not a "joke" to the clear majority of U.S voters who support passing laws to protect medical marijuana patients from harassment by police and the DEA. President Trump should fire Chuck Rosenberg and appoint a new DEA administrator who will respect science, medicine, patients and voters.