Washington Post: "The $500,000 donation from Insys Therapeutics, based in Chandler, Ariz., amounts to more than one-third of all money raised by Arizonans for Responsible Drug Policy, the group opposing legalization. It's one of the largest single contributions to any anti-legalization campaign ever, according to campaign finance records maintained by ballotpedia.com."

"Insys has developed a drug based on a synthetic version of marijuana's active ingredient, THC. Called Syndros, the drug was approved by the Food and Drug Administration in July for treatment of symptoms in AIDS and cancer patients. It is awaiting scheduling by the Drug Enforcement Administration.

"Insys also manufactures the deadly painkiller Subsys fentanyl. The company is facing state and federal investigations, as well as a shareholder lawsuit, over allegations that it improperly marketed the drug to doctors in an effort to boost sales.

"In February, a former sales rep for the company pleaded guilty to fraud charges stemming from a kickback scheme involving Subsys fentanyl purchases. Last month, two former employees pleaded not guilty after being arrested for participating in a similar fentanyl kickback scheme."