Originally Posted by
bocastephen
Regardless, a US government official may not review the contents of a US citizen's communications without a warrant or consent - since the US citizen was not presenting themselves at the border checkpoint, the inspector had no right to read the citizen's emails without asking permission.
Your statement of the law as it relates to a border crossing is 100% wrong. Customs has the right to inspect anything being brought into or being taken out of the United States.