PC Mag.com 
Thursday, August 27, 2009
The American Civil Liberties Union on Wednesday sued the Department of Homeland Security in an effort to uncover documents related to laptop searches at the border.
“The ACLU believes that suspicionless searches of laptops violate the First and Fourth Amendments,” the group wrote in the suit, filed in a New York District Court.
In July 2008, the Customs and Border Protection agency within DHS published formal guidelines for laptop border searches that gave CBP officials permission to search laptops and electronic devices at the border. Court cases on the topic have generally found that citizens should have diminished expectations of privacy when re-entering the country because the U.S. has a right to protect itself and control what crosses its borders.
Critics of the policy claim that laptop searches are an invasion of privacy – a personal computer holds a lot more information than a suitcase full of clothes or briefcase full of paperwork. What’s to stop CBP from copying the contents of your computer and keeping it on file indefinitely, they have argued.