United States Postal Service

The United States Postal Service operates as an independent establishment of the executive branch, deriving its authority directly from the Constitution. Congress created the modern entity on July 1, 1971, through the Postal Reorganization Act to replace the Cabinet-level Post Office Department. This legislative move aimed to shield daily operations from direct political interference while maintaining a mandate for public service across the nation.

Headquartered at L'Enfant Plaza in Washington, D.C., the organization employs over half a million career workers and more than 100,000 pre-career staff members. It functions solely within the United States and its territories despite managing international exchange agreements. The agency delivers First-Class Mail, Marketing Mail, Periodicals, and Package Services including Priority Mail and Parcel Select. Unlike private carriers, it holds a legal monopoly on non-commercial letter delivery and must serve every address six days a week.

Financial pressures stem from statutory requirements to prefund retiree health benefits decades in advance. These mandates have caused substantial losses even as package volumes reached record highs. Recent reports from August 2026 highlight ongoing struggles with budget cuts and operational disruptions. Specific incidents include rerouting Central Illinois mail to St. Louis on weekends and addressing security breaches involving master keys in Berkeley and Hamburg. [edit]