
The United States Postal Service (USPS) is an integral part of daily life in America, delivering mail, parcels, and packages, and providing postal money orders. The USPS has its roots in the U.S. Constitution, which grants Congress the power to establish post offices and postal roads. This power has been interpreted to include the authority to carry, deliver, and regulate mail, as well as to designate mail routes and construct or designate post offices. The Supreme Court has also recognized Congress's broad power over the postal system, including the ability to enter into agreements with states regarding the use and maintenance of roads for mail transportation. Despite this broad power, there have been controversies and lawsuits regarding the postal system, including debates over the federal government's ability to acquire buildings and roads for post offices and challenges involving the types of materials that can be mailed.
| Characteristics | Values |
|---|---|
| Country | United States |
| Constitution | Article I, Section 8, Clause 7 of the United States Constitution |
| Postal Clause | Authorizes the establishment of "post offices and post roads" |
| Postal Clause Added | To facilitate interstate communication and create a revenue source |
| Postal Clause Power | Given to Congress |
| Postal Service | United States Postal Service (USPS) |
| Postal Service History | Replaced the U.S. Post Office Department, a cabinet-level department of the executive branch |
| Postal Reorganization Act | Passed in 1970, creating an independent agency to manage USPS |
| Postal Power Interpretation | Includes protecting the mail and designating certain materials as non-mailable |
| Postal Power Limitations | Cannot exceed postal powers to enforce requirements outside its scope |
| Postal Power and First Amendment | Court rulings have balanced postal power with First Amendment rights |
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What You'll Learn

The Postal Clause
The Framers' understanding of postal services was influenced by their experiences with the British postal system, from which they adopted terms like "posts," "post roads," "postmaster," and "post offices." The British imported their postal system to Colonial America in 1692 when they appointed a postmaster for the colonies. The Articles of Confederation of 1781 provided Congress with the "sole and exclusive" power of establishing and regulating post offices from one state to another and exacting postage to defray expenses.
There were early disagreements about the boundaries of postal power. For example, Thomas Jefferson doubted granting Congress the power to designate post roads and considered road building a state responsibility. John Jay, in a letter to George Washington, suggested that the postal service should not handle newspaper delivery and that the Post Office should be supervised by the executive branch.
The Supreme Court has played a significant role in shaping the understanding of the Postal Clause. In the early 19th century, the Court construed Congress's power narrowly, holding that it primarily consisted of designating roads and sites. However, this interpretation gradually gave way, allowing the appropriation of land for postal purposes. The Court has also recognized implied powers in the Postal Clause, such as protecting the mail and designating certain materials as non-mailable, criminalizing abuses of the postal system, and excluding certain items from being mailed through the USPS, such as obscene or indecent materials.
The Postal Reorganization Act of 1970 transformed the U.S. Post Office Department, which was previously part of the President's Cabinet, into an independent agency managing the newly formed United States Postal System.
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Congress's enumerated powers
Article I, Section 8, Clause 7 of the United States Constitution, also known as the Postal Clause, grants Congress the enumerated power to establish post offices and postal roads. This clause, added to the Constitution to facilitate interstate communication and create a revenue source for the early US, has been interpreted to give Congress the authority to designate mail routes, construct or designate post offices, and carry, deliver, and regulate mail within the country.
The Postal Clause has been construed to give Congress implied powers, such as protecting the mail. For instance, in 1935, Congress passed the Public Utility Holding Act, which included language prohibiting unregistered companies from using the mail system. The Supreme Court viewed this as a penalty, affirming that Congress cannot exceed its postal powers to enforce requirements outside its scope.
The interpretation of Congress's powers under the Postal Clause has evolved over time. Initially, there were disagreements over whether Congress had the authority to actually build post roads and post offices or merely designate them. Early in the 19th century, the Supreme Court narrowly construed this power, holding that it primarily consisted of designating roads and sites. However, over time, the Court expanded its interpretation, ultimately allowing the appropriation of land for postal purposes in Kohl v. United States (1876).
The Postal Clause has also been invoked as the constitutional basis for the United States Post Office Department and its successor, the United States Postal Service (USPS). The Postal Reorganization Act of 1970 transformed the Post Office Department into an independent agency, the USPS, which is now an integral part of daily life in America, relied upon for mail delivery and other services.
Despite the USPS's financial losses in recent years, it remains a crucial aspect of American infrastructure, and any significant reforms or privatization efforts would likely require an act of Congress.
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Supreme Court interpretations
The US Constitution, in Article I, Section 8, Clause 7, gives Congress the power to establish post offices and postal roads. This is known as the Postal Clause.
The Supreme Court has played a significant role in shaping the interpretation of the Postal Clause over the years. One of the earliest controversies regarding the Postal Clause was whether Congress had the power to construct post roads and post offices or merely designate which lands and roads were to be used for postal purposes. In the early 19th century, the Supreme Court interpreted this power narrowly, holding that it consisted mainly of designating roads and sites. However, over time, the Court gradually allowed the appropriation of land for postal purposes, as seen in Kohl v. United States (1875 or 1876). In this case, Justice William Strong affirmed the federal government's power to seize private land for a post office under the doctrine of "eminent domain."
The Supreme Court has also recognised implied powers in the Postal Clause, such as protecting the mail. In Searight v. Stokes, the Court confirmed that Congress was charged with transporting mail based on the Postal Clause, giving them the authority to enter into agreements with states regarding the use and maintenance of roads for postal transportation.
In United States Postal Service v. (1981), the Supreme Court recognised Congress's "broad power" over the postal system. The Court has consistently deferred to Congress's authority over the postal system, as seen in the Public Utility Holding Company Act of 1935, where Congress prohibited unregistered companies from using the mail system. The Supreme Court viewed this as a valid penalty but noted that Congress could not exceed its postal powers to enforce requirements outside its scope.
In Lamont v. Postmaster General, the Supreme Court struck down a statute authorising the Post Office to detain mail deemed "communist political propaganda." The Court held that while Congress was not bound to operate a postal service, it must observe constitutional guarantees, including the First Amendment right to receive information.
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Postal power controversies
The Postal Clause, or Article I, Section 8, Clause 7 of the United States Constitution, gives Congress the power to establish post offices and postal roads. This clause has been the source of several controversies and legal challenges over the years.
One early controversy surrounded the meaning of the word "establish", and whether it gave Congress the power to construct postal facilities and roads, or only to designate existing buildings and routes for postal use. This controversy was largely resolved in the early 19th century, with the Supreme Court narrowly construing the power to refer primarily to the designation of roads and sites. However, this interpretation gradually gave way, culminating in Kohl v. United States (1876), which allowed the federal government to appropriate land for postal purposes.
Another controversy related to the scope of Congress's power to regulate the postal system. The Postal Clause has been interpreted to include implied powers, such as protecting the mail and designating certain materials as non-mailable. However, the Supreme Court has also recognised limits to Congress's postal powers, such as in United States v. Railroad Bridge Co. (1855), where it was held that Congress's power did not extend to constructing a bridge over a navigable waterway.
The Postal Clause has also been invoked in First Amendment challenges regarding the exclusion of certain materials from the mail. While attempts to limit the content of mail on the basis of obscenity or political expression have been upheld by the courts, the Supreme Court has taken a more assertive approach in recent years, striking down postal laws that restrict free expression.
More recently, the postal system has faced criticism from President Donald Trump, with directives from postal officials causing concerns about potential interference with absentee and mail-in ballots. Despite these controversies, the Supreme Court has affirmed Congress's broad power over the postal system, including the responsibility for ensuring the safe and speedy transit of mail.
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Privatisation suggestions
The United States Postal Service (USPS) has been an integral part of daily life in America, relied on for mail delivery, including parcels and packages. The USPS is also used by many for banking services, such as obtaining postal money orders. However, in recent years, the USPS has seen steady losses, with calls for reforms and changes. Suggestions of privatisation have been made, but this would be a complicated process, requiring an Act of Congress.
One of the main issues with privatisation is that the USPS has its roots in the U.S. Constitution, with Article I, Section 8, Clause 7 of the Constitution, known as the Postal Clause, authorising Congress to establish "post offices and post roads". The Postal Clause has been interpreted to give Congress broad powers over the postal system, including the implied authority to carry, deliver and regulate the mail of the United States.
The Postal Clause has been construed to give Congress the power to designate mail routes and construct or designate post offices. This power was narrowly construed by the Supreme Court in the early 19th century, holding that it consisted mainly of the designation of roads and sites. However, this interpretation gradually gave way, allowing for the appropriation of land for postal purposes. This culminated in Kohl v. United States (1875/1876), where the Supreme Court affirmed the federal government's power to seize private land for a post office and customs house under the doctrine of "eminent domain".
The Postal Reorganisation Act of 1970 created an independent agency to manage the USPS, moving it from a cabinet-level department of the executive branch. This Act dramatically changed the federal postal service, giving Congress broad powers over the postal system.
Despite the broad powers granted to Congress by the Postal Clause, there have been numerous lawsuits challenging the postal system, including First Amendment challenges involving what kind of materials can be mailed. The Supreme Court has generally deferred to state officials in these cases. However, if there is a crisis in the postal system's ability to handle mail, the Supreme Court has made clear that Congress has the power and responsibility to act.
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Frequently asked questions
Article I, Section 8, Clause 7 of the United States Constitution, also known as the Postal Clause, gives Congress the power to establish post offices and post roads.
The Postal Clause was added to the Constitution to facilitate interstate communication and create a revenue source for the early US government. The Articles of Confederation, which preceded the Constitution, stated that the government had the "sole and exclusive right and power" to establish and regulate post offices and determine postage rates.
The Postal Clause has been interpreted to give Congress the power to designate mail routes, construct or designate post offices, and regulate the mail system. Congress also has implied powers, such as protecting the mail.
Yes, in certain cases. For example, in 1935, Congress passed the Public Utility Holding Act, which prohibited unregistered public utility holding companies from using the mail system. The Supreme Court upheld this as a valid exercise of Congress's postal powers.
No, the President cannot unilaterally privatize the postal system. Any such proposal would likely require an act of Congress.

























