Federal charges for interference/destruction of US Mail, since it was not addressed to the principal?
Used to be serious felony a few decades ago, when I worked for the Post Office Department. (Not the "new" 'Postal Service'.)
§ 1702. Obstruction of correspondence
Release date: 2004-08-06
Whoever takes any letter, postal card, or package out of any post office or any authorized depository for mail matter, or from any letter or mail carrier, or which has been in any post office or authorized depository, or in the custody of any letter or mail carrier, before it has been delivered to the person to whom it was directed, with design to obstruct the correspondence, or to pry into the business or secrets of another, or opens, secretes, embezzles, or destroys the same, shall be fined under this title or imprisoned not more than five years, or both.
Used to be serious felony a few decades ago,
DITTO THAT.