"Supreme Court Divided Over Expert Testimony in Drug 'Mule' Case Appeal"

The Supreme Court is considering whether prosecutors can use expert testimony to infer that individuals convicted of being drug mules generally know what they are transporting, as in the case of Delilah Guadalupe Diaz, who was found with methamphetamine in her car. Diaz, who claims she didn't know about the drugs, is appealing her drug trafficking conviction. The justices expressed skepticism about both sides' interpretations of the law, with indications that the government could ultimately prevail. The case raises questions about the admissibility of expert testimony regarding a defendant's mental state in drug trafficking cases.