In the name of "national security," the Department of Homeland Security has announced that customs officials can take people's computers without cause, keep them as long as they deem necessary to snoop through them, and share whatever they find with other governmental or private entities. DHS claims that this is necessary to "prevent terrorism." CNet has links to the policy text.
This isn't actually anything new; the government has been doing this without a publicly stated policy for some time, and it's made the news before. What's new is that the government is admitting that its policy is to rifle through travelers' private information without any justification.
If you must travel to other countries with a laptop computer, remove any information which might be remotely confidential before taking a foreign trip. It's best to clean out all music files; you might inadvertently have something in violation of copyright. Put everything you need on a server, in encrypted form or with restricted access, and retrieve it when you get to your destination. Then wipe it again before your trip home. With anything that's optional -- a music player, a PDA -- leave it behind if you can.
When dealing with tyrannical, power-mad governments, extra precautions are necessary.
