As used in this chapter—
(1)
“penalty mail” means official mail, other than franked mail, which is authorized by law to be transmitted in the mail without prepayment of postage;
(5)
“Members of Congress” includes Senators, Representatives, Delegates, and Resident Commissioners; and
(6)
“missing child” has the meaning provided by section 403(1) of the Juvenile Justice and Delinquency Prevention Act of 1974.