 According to "The New York Times", Blackburn's best known legislation was that bill which revised the legal standard that the Drug Enforcement Administration (DEA) had used to establish that "a significant and present risk of death or serious bodily harm that is more likely than not to occur," rather than the previous tougher standard of "imminent danger," before suspending the manufacturer's opioid drug shipments.The legislation was criticized in internal Justice Department documents, and by the DEA's chief administrative law judge, as hampering DEA enforcement actions against drug distribution companies engaging in black-market sales.Rannazzisi said he informed Blackburn's staffers precisely what the effects would be as a result of the passage of a 2016 law the two sponsored, as national awareness grew regarding a crisis in the prescriptions of opioids in the United States.