No Suspicion Needed for Manual Border Phone Searches, U.S. Federal Appeals Court Rules

According to a report by Sophia Cope and legal intern Suzanne Castillo from EFF Deeplinks, the U.S. Fourth Circuit Court of Appeals has ruled in favor of the government in U.S. v. Belmonte Cardozo. The decision states that customs officials do not even need suspicion of wrongdoing to manually search electronic devices at borders, potentially impacting the privacy rights of technology users.

The EFF, in collaboration with the national ACLU, its Maryland, North Carolina, South Carolina, and Virginia affiliates, and the National Association of Criminal Defense Lawyers (NACDL), had submitted an amicus brief. The EFF argued that probable cause and a warrant should be required for electronic device searches at borders and that the same Fourth Amendment standards should apply to both manual searches and those conducted with forensic tools. However, the appeals court rejected this argument, ruling that a lower standard applies to manual searches.

The Border Exception Collides with Smartphones

The Fourth Amendment requires that government searches of persons or property be “reasonable,” which typically means obtaining a warrant based on probable cause from a judge. However, searches without a warrant may still be deemed reasonable if they fall within established exceptions to the warrant requirement. One such exception is for border searches.

The border search exception allows warrantless searches of persons and property crossing the U.S. border, including airports considered “functional equivalents” of a border. The government’s primary interest lies in controlling who and what enters the country.

Historically, courts have categorized searches of luggage, vehicles, and personal items at borders as “routine” and reasonable even without suspicion of wrongdoing. In contrast, more invasive “non-routine” searches, such as body searches or those that damage property, require reasonable suspicion.

The Riley Case and Smartphones’ Unique Nature

The key issue lies in the fact that the privacy interests tied to personal data stored on smartphones and laptops are fundamentally different from those tied to the contents of a suitcase. In the 2014 Riley v. California decision, the U.S. Supreme Court ruled that the search-incident-to-arrest exception does not apply to cell phones, requiring warrants for phone searches in domestic cases as a general rule.

The Supreme Court recognized the unprecedented privacy interests people have in their phones. Even a brief manual search could expose “the privacies of life”—including one’s political beliefs, religious faith, or sexual orientation. The Court noted that electronic device searches are “not even close” to searches of bags or physical containers and must be evaluated under different standards.

Contradictions in the Ruling

The Fourth Circuit’s decision appears to conflict with the spirit of the Riley ruling. While the Supreme Court demanded strict standards for domestic searches, this decision significantly reduces those protections at the border.

According to Sophia Cope and Suzanne Castillo, the appeals court drew a distinction between “manual searches” and “forensic tool searches,” applying a lower standard to the former. Forensic tools refer to software used to connect to a device, download its entire contents, and search through the data. Yet even manual searches—where an officer manipulates a phone’s screen to view messages, photos, or app data—carry significant privacy intrusions.

Practical Risks for Travelers

The practical implications of this ruling are substantial. Customs officers at international airports can now manually inspect the contents of travelers’ smartphones without any suspicion of wrongdoing. Reports of devices being confiscated and passwords being demanded at borders already exist, and this decision offers legal validation to those practices.

Another troubling aspect is the blurred line between manual and forensic searches. For instance, if customs officials use a phone’s backup function to copy its data, is that considered a manual or a forensic search? The ruling does not offer clear technical distinctions, leaving much to the discretion of government officials.

Privacy Rights and Technological Evolution

The issue of data privacy at borders is growing more complex with advances in technology. Modern smartphones store highly sensitive data, including location histories, health information, financial records, and biometric data. With cloud integration, these devices also allow access to remote servers.

Critics argue that the Fourth Circuit failed to adequately consider the qualitative differences between physical searches and access to digital data. Even a short manual search can easily reveal personal details such as SMS messages, call logs, and app usage patterns.

Future Challenges and the Possibility of Appeal

The EFF may challenge this decision further, potentially seeking an en banc rehearing or appealing to the U.S. Supreme Court. Given the tension between this ruling and the Riley precedent, the case presents significant legal questions deserving of the Supreme Court’s attention.

However, overturning the established tradition of the border search exception will not be easy. Civil liberties organizations like the EFF and ACLU may also push for legislative solutions, advocating for laws that establish clear standards for electronic device searches at borders as a long-term remedy.

Editorial Opinion

In the short term, technology users and business professionals traveling to or from the U.S. need to reassess the risks of surrendering their devices at borders. The management of sensitive work data and client information during travel will require careful consideration. Companies should revisit their travel policies to address these risks.

In the long run, encryption and strategic separation of cloud data are likely to become more commonplace. Practices such as keeping physical devices free of data and relying on remote access for necessary information may gain traction. International alignment on data protection is another critical issue as countries like Japan may adopt similar rulings, potentially influencing the global framework for data privacy.

This ruling highlights the broader challenge of laws struggling to keep pace with technological advancements. Balancing the privacy protections established in Riley with the border search exception remains a pressing legal dilemma. Should legislators act swiftly, or should the judiciary provide incremental clarifications? This case offers valuable insights for Japan’s digital privacy legislation as well, warranting deeper debate on these issues.

References

• “The Fourth Circuit Says Border Agents Can Search Your Phone By Hand, No Suspicion Required”, by Sophia Cope — EFF Deeplinks, 2026-07-22T22:30:31.000Z (CC BY)
• Source URL: https://www.eff.org/deeplinks/2026/07/fourth-circuit-says-border-agents-can-search-your-phone-hand-no-suspicion-required