https://www.washingtonpost.com/world/national-security/customs-and-border-protection-examining-agents-questioning-of-national-security-reporter/2018/06/12/05dac696-6e74-11e8-afd5-778aca903bbe_story.html

«Rambo’s search of travel records could be a crime if he didn’t have a legitimate reason to examine that information, which is protected by privacy laws and regulations that prevent unauthorized disclosures of personal information, officials said.

As a DHS employee, Rambo could have had access to records of when Americans leave and reenter the United States, including from the Advance Passenger Information System, first developed by U.S. customs officials in the 1980s.

The passenger records may be shared only with Homeland Security personnel “who have a need to know the information as part of the performance of their official employment duties,” according to a privacy assessment the department completed in 2015. The rules were put in place to keep government employees from inappropriately using Americans’ personal information.»