Before you travel out of the country, make sure you take a crusty old virus-ridden WinXP laptop with you....just for funsies.
The US Department of Homeland Security’s (DHS) Privacy Impact Assessment for the Border Searches of Electronic Devices outlines the finer points of border officials’ authority to search the electronic devices of citizens and non-citizens alike crossing the US border. What becomes clear is that this authority has been broadly interpreted to mean that any device brought into or out of the country is subject to the highest level of scrutiny, even when there is no explicit probable cause.