Alternate Title: Immigration and Customs Enforcement Directive 7-6.1: Border Searches of Electronic Devices
"This Directive provides legal guidance and establishes policy and procedures within U.S. Immigration and Customs Enforcement (ICE) with regard to border search authority to search, detain, seize, retain, and share information contained in electronic devices possessed by individuals at the border, the functional equivalent of the border, and the extended border to ensure compliance with customs, immigration, and other laws enforced by ICE. This Directive applies to searches of electronic devices of all persons arriving in, departing from, or transiting through the United States, unless specified otherwise. This Directive applies to border search authority only. Nothing in this Directive limits the authority of ICE Special Agents to act pursuant to other authorities such as a warrant, a search incident to arrest, or a routine inspection of an applicant for admission."
ICE Directive 7-6.1
Department of Homeland Security: http://www.dhs.gov/