Constitution

Article I, Section 8: The Powers of Congress

Section 8 lists the powers of Congress, from taxing, borrowing and regulating commerce to declaring war, ending with the Necessary and Proper Clause.

4Conservative Editors · Published November 8, 2026

The text

The Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises, to pay the Debts and provide for the common Defence and general Welfare of the United States; but all Duties, Imposts and Excises shall be uniform throughout the United States;

To borrow Money on the credit of the United States;

To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes;

To establish an uniform Rule of Naturalization, and uniform Laws on the subject of Bankruptcies throughout the United States;

To coin Money, regulate the Value thereof, and of foreign Coin, and fix the Standard of Weights and Measures;

To provide for the Punishment of counterfeiting the Securities and current Coin of the United States;

To establish Post Offices and post Roads;

To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries;

To constitute Tribunals inferior to the supreme Court;

To define and punish Piracies and Felonies committed on the high Seas, and Offences against the Law of Nations;

To declare War, grant Letters of Marque and Reprisal, and make Rules concerning Captures on Land and Water;

To raise and support Armies, but no Appropriation of Money to that Use shall be for a longer Term than two Years;

To provide and maintain a Navy;

To make Rules for the Government and Regulation of the land and naval Forces;

To provide for calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions;

To provide for organizing, arming, and disciplining, the Militia, and for governing such Part of them as may be employed in the Service of the United States, reserving to the States respectively, the Appointment of the Officers, and the Authority of training the Militia according to the discipline prescribed by Congress;

To exercise exclusive Legislation in all Cases whatsoever, over such District (not exceeding ten Miles square) as may, by Cession of particular States, and the Acceptance of Congress, become the Seat of the Government of the United States, and to exercise like Authority over all Places purchased by the Consent of the Legislature of the State in which the Same shall be, for the Erection of Forts, Magazines, Arsenals, dock-Yards, and other needful Buildings;—And

To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof.

In plain English

Section 8 is the list of what Congress may do. Grouped by subject:

  • Money: tax (with uniform duties and excises), pay debts, spend for "the common Defence and general Welfare," borrow, coin money and set its value, punish counterfeiting.
  • Commerce: regulate trade with foreign nations, among the states, and with Indian tribes; set uniform rules for naturalization and bankruptcy; fix weights and measures.
  • Infrastructure and ideas: post offices and post roads; copyrights and patents "for limited Times."
  • Courts and law: create lower federal courts; punish piracy and offenses against the law of nations.
  • War and defense: declare war, grant letters of marque, raise armies (funded no more than two years at a time), maintain a navy, make rules for the armed forces, call out and organize the militia, with the states appointing militia officers and training them.
  • The capital: govern a federal district up to ten miles square, and federal enclaves such as forts and arsenals bought with a state's consent.
  • The Necessary and Proper Clause: pass laws needed to carry these powers, and the other powers of the national government, into execution.

The list is the point. Congress has these powers and, under the 10th Amendment, the rest remain with the states or the people.

What the Founders said

Madison made the promise plainly in Federalist No. 45: "The powers delegated by the proposed Constitution to the federal government are few and defined. Those which are to remain in the State governments are numerous and indefinite."

Two clauses drew the most fire. Anti-Federalists, including the writer Brutus, warned that "general Welfare" and "necessary and proper" would let Congress do anything. Madison answered in Federalist No. 41 that the general phrase is explained and limited by the specific powers that follow it; it would be absurd, he argued, to list powers in detail if one phrase already granted all of them. Hamilton, in Federalist No. 33, said the Necessary and Proper Clause added nothing new; it only made explicit what a grant of power implies.

At the Convention, on August 17, 1787, the delegates changed the draft's power to "make" war into the power to "declare" war, leaving the executive able to repel sudden attacks.

How the courts have read it

  • McCulloch v. Maryland (1819): "necessary" means convenient or useful, not indispensable; Congress could charter a national bank as a means to its listed powers.
  • Gibbons v. Ogden (1824): commerce includes navigation, and federal licensing of coastal trade preempted New York's steamboat monopoly.
  • United States v. Butler (1936): the Court adopted Hamilton's view that the spending power is not limited to the other enumerated powers.
  • Wickard v. Filburn (1942): a farmer's wheat grown for his own use could be regulated because, taken together with others, it affected interstate commerce.
  • South Dakota v. Dole (1987): Congress may attach conditions to federal grants, within limits.
  • United States v. Lopez (1995) and United States v. Morrison (2000): the Commerce Clause does not reach gun possession near schools or gender-motivated violence, which are not economic activity.
  • Gonzales v. Raich (2005): Congress may ban home-grown marijuana as part of a national regulatory scheme.
  • NFIB v. Sebelius (2012): the Commerce Clause does not let Congress compel people to buy health insurance, but the mandate's penalty was upheld as a tax.

Why it matters now

The modern federal government reaches into nearly every corner of national life, and most of that reach rests on three clauses: commerce, spending, and necessary and proper. A reader who looks at Section 8 and then at the federal budget or the Code of Federal Regulations will see the distance between them.

Lopez and Morrison showed that the commerce power has an outer edge. NFIB v. Sebelius drew another line. Those cases are modest, but they reaffirm that the list means something: a power that can justify anything is not one of "few and defined" powers.

Section 8 also places war, money and the military firmly with Congress. Congress declares war, funds the army two years at a time, and sets the value of money. When those powers drift to the executive or to independent agencies, the people lose the ability to hold their representatives responsible for the most consequential decisions a government makes.

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