Old Policy:

The U.S. Customs Service must guard the rights of individuals being inspected to ensure their personal privacy is protected. Therefore, as a general rule, Customs officers should not read personal correspondence

New Policy:

In the course of a border search, and absent individualized suspicion, officers can review and analyze the information transported by any individual attempting to enter, reenter, depart, pass through, or reside in the United States.

Same old fucking excuse:

DHS spokeswoman Amy Kudwa says "The decision to change standards reflects the realities of the post 9/11 environment."