From our private database of 14,100+ case briefs...
United States v. Truong Dinh Hung
United States Court of Appeals for the Fourth Circuit
629 F.2d 908 (1980)
Truong Dinh Hung (defendant) was a Vietnamese citizen who came to the United States in 1965 and remained active in politics surrounding U.S. involvement in Vietnam. In 1976, Truong met Vietnamese-American Dung Krall. Knowing Krall had a close relationship with the Vietnamese community in Paris, Truong asked Krall to carry packages to representatives of the Socialist Republic of Vietnam there. Inside of these packages were copies of classified documents belonging to the U.S. government related to its activities in Southeast Asia. Truong obtained these documents from Ronald Humphrey (defendant), a U.S. Information Agency employee. Unbeknownst to Truong, however, Krall was a confidential informant for the Central Intelligence Agency (CIA) and Federal Bureau of Investigation (FBI), reporting to the agencies and handing the packages over for inspection before she brought them to Paris—an arrangement that lasted from September 1976 to January 1978. When it Truong’s activities were discovered, the FBI sought Truong’s source of information. To do so, the government organized widespread surveillance of Truong through tapping his phone and bugging his apartment, which continued for over 250 days. The government never acquired any warrant or court authorization for the taps. On July 20, 1977, the Criminal Division of the Justice Department began to put together a criminal prosecution against the defendants. On January 31, 1978, Humphrey and Truong were arrested. A district court ruled that evidence obtained by surveillance after July 20, 1977, when the official criminal investigation commenced, should be excluded at trial, and that all evidence secured before that date could be rightfully introduced at trial. Humphrey and Truong were subsequently convicted. The two then challenged their convictions, arguing that the surveillance conducted violated the Fourth Amendment.
Rule of Law
Holding and Reasoning (Winter, J.)
What to do next…
Unlock this case brief with a free (no-commitment) trial membership of Quimbee.
You’ll be in good company: Quimbee is one of the most widely used and trusted sites for law students, serving more than 97,000 law students since 2011. Some law schools—such as Yale, Vanderbilt, Berkeley, and the University of Illinois—even subscribe directly to Quimbee for all their law students. Read our student testimonials.
Learn more about Quimbee’s unique (and proven) approach to achieving great grades at law school.
Quimbee is a company hell-bent on one thing: helping you get an “A” in every course you take in law school, so you can graduate at the top of your class and get a high-paying law job. We’re not just a study aid for law students; we’re the study aid for law students. Read more about Quimbee.
Here's why 221,000 law students have relied on our case briefs:
- Written by law professors and practitioners, not other law students. 14,100 briefs, keyed to 189 casebooks. Top-notch customer support.
- The right amount of information, includes the facts, issues, rule of law, holding and reasoning, and any concurrences and dissents.
- Access in your classes, works on your mobile and tablet. Massive library of related video lessons and high quality multiple-choice questions.
- Easy to use, uniform format for every case brief. Written in plain English, not in legalese. Our briefs summarize and simplify; they don’t just repeat the court’s language.