USPS Domestic Mail Manual (DMM): Primary source of regulations governing domestic mail services and requirements for postal authorization

USPS Administrative Support Manual: Contains administrative policies and procedures for postal operations including authorization requirements

Title 39 USC: United States Code section specifically governing Postal Service operations and regulations

Privacy Act 1974: Federal law protecting personal information held by government agencies, including postal records

Postal Reorganization Act: Fundamental law that reorganized the Post Office Department into the USPS, establishing basic operational framework

REAL ID Act: Federal law establishing standards for identification documents, relevant for identity verification at post offices

Mail Fraud Statute (18 USC ?? 1341): Criminal law prohibiting use of postal service for fraudulent schemes, important for authorization verification

Identity Theft and Assumption Deterrence Act: Federal law criminalizing identity theft, relevant for verification of authorization authenticity

Uniform Power of Attorney Act: Model law adopted by many states governing power of attorney, relevant when POA is basis for postal authorization

USPS Form 1583 Requirements: Specific USPS form requirements for authorizing agents to receive mail on behalf of others