Earlier quoted context omitted.
When you send a letter it does not belong to the post office while in transit. Why are bits on a hard drive any different?
Inspectors can and do inspect the contents many types of mail, though, so I'm not sure this example is a good one for those championing privacy... To elaborate: when using the US Postal Service, only domestic "First Class Mail" and "Priority Mail" (these are different and distinct from standard mail) is protected and requires a probable cause warrant to open and inspect. Other types of mail, as well as all packages s…
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
Probably the same way civil asset forfeiture does, somehow precedent became the supreme law of the land as opposed to the constitution.