The Constitution provides 4th Amendment protection against illegal searches and seizures. There must be probable cause and suspicion that a crime is being or has been committed.
Where is that protection not provided by the government within the US?
Answer: 100 miles from any border -- 100 miles inside the US from the Pacific Coast, from the Atlantic Coast, from the Mexican and Canadian borders, 100 miles within the borders of Alaska, and the ENTIRE STATE OF HAWAII.
Within those buffer zones, the Customs and Border Protection agencies are permitted to force you to let them inspect your phone, your computers, etc.
"Roughly two-thirds of the United States' population lives within the 100-mile zone—that is, within 100 miles of a U.S. land or coastal border. That's about 200 million people."
"Federal border agents are stopping, interrogating, and searching Americans on an everyday basis with absolutely no suspicion of wrongdoing, and often in ways that our Constitution does not permit."
https://www.aclu.org/other/constitution-100-mile-border-zoneSo, if HPD or the FBI wants to get your phone or laptop and clone them for an investigation, what's stopping them from doing it through Customs and Border Protection? No warrant, no probable cause. Just a 1953 law that lets certain agencies operated outside the Constitution.