With the Secret Service still smarting from its 2012 prostitution scandal in Cartagena, Colombia, another federal law agency is in hot water over an even more salacious sex scandal—in the same country. The Administrator of the Drug Enforcement Administration, Michelle Leonhart, Tuesday faced a grueling three-hour inquisition from the House Oversight Committee over an Inspector General’s report that found DEA agents in Bogota, Colombia engaged in “sex parties” with prostitutes and that the parties were paid for by the very drug cartels the DEA was sent to fight. “This behavior is not acceptable,” Leonhart said in her opening statement. “It...