This story is one that is both a bit frightening, if you happen to travel to and from the United States, and incredibly stupid on so many fronts, it's downright laughable. Let's start with frightening . . . Michael Willems, in his Unreasonable Man blog, led me to an interesting and scary story regarding US border searches. this CBC article. You should still read it, but here's the short version.
In order to protect us, the United States government has given its border guards the power to seize your notebook computer, cell phone, digital planner, documents, pamphlets, hard drives (you name it), etc. They can then make full copies of this information in whatever form it takes, and share it with a number of government agencies. Keep in mind as you read this that they do not need just cause to do this, nor do they even need to suspect you of anything. At a later, more convenient time (to them, not you), they can look over the information, presumably to uncover terrorists, but also to ". . . help authorities detect possible instances of terrorism, narcotics smuggling, child pornography and violations of copyright and trademark laws."