Diaz v. United States
2024 United States Supreme Court case / From Wikipedia, the free encyclopedia
Diaz v. United States, (Docket No. 23-14), is a United States Supreme Court case. The court interpreted a provision of the Federal Rules of Evidence regarding the admissibility of expert witness testimony.[1]
Quick Facts Diaz v. United States, Argued March 19, 2024 Decided June 20, 2024 ...
Diaz v. United States | |
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Argued March 19, 2024 Decided June 20, 2024 | |
Full case name | Delilah Guadalupe Diaz v. United States |
Docket no. | 23-14 |
Argument | Oral argument |
Case history | |
Prior | United States v. Diaz (9th Cir. 2023). United States v. Diaz (S.D. Cal. 2020). |
Questions presented | |
In a prosecution for drug trafficking-where an element of the offense is that the defendant knew she was carrying illegal drugs, does Rule 704(b) permit a governmental expert witness to testify that most couriers know they are carrying drugs and that drug-trafficking organizations do not entrust large quantities of drugs to unknowing transporters? | |
Holding | |
Expert testimony that “most people” in a group have a particular mental state is not an opinion about “the defendant” and thus does not violate Rule 704(b) | |
Court membership | |
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Case opinions | |
Majority | Thomas, joined by Roberts, Alito, Kavanaugh, Barrett, Jackson |
Concurrence | Jackson |
Dissent | Gorsuch, joined by Sotomayor, Kagan |
Laws applied | |
Federal Rule of Evidence 704(b) |
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