Congressional Powers

Why This Matters

Congressional powers sit at the heart of the AP US Government exam because they illustrate how the Framers designed a system of separated powers and checks and balances. You're not just being tested on what Congress can do; you're being tested on why these powers exist and how they interact with the executive and judicial branches. Every power Congress holds connects back to core principles: popular sovereignty, limited government, federalism, and republican governance.

When you encounter congressional powers on the exam, think about the underlying mechanisms. Is this an enumerated power explicitly listed in Article I, Section 8? Is it an implied power derived from the Necessary and Proper Clause? Does it function as a check on another branch? Don't just memorize the list. Know what constitutional principle each power demonstrates and be ready to explain how these powers create tension and balance in the federal system.

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Fiscal Powers: Controlling the Nation's Money

The Constitution grants Congress extensive control over federal finances, reflecting the Framers' belief that the power to tax and spend should rest with the people's representatives. These powers ensure democratic accountability over how the government raises and uses money.

Power to Levy Taxes

• Revenue-raising authority under Article I, Section 8 gives Congress the power to impose taxes to fund government operations, making this the foundation of federal fiscal power
• The Origination Clause (Article I, Section 7) requires all revenue bills to start in the House of Representatives, reflecting the Framers' intent that the chamber closest to the people should control taxation
• Direct taxes must be apportioned among states by population, a constitutional requirement that shaped early tax policy (note: the 16th Amendment later exempted income taxes from this apportionment rule)

Power to Borrow Money

• Credit of the United States allows Congress to authorize borrowing through government bonds when tax revenues fall short of spending needs
• Deficit spending lets the government fund programs during economic downturns or emergencies without immediate tax increases
• National debt ceiling debates illustrate ongoing tensions between fiscal responsibility and government obligations, since Congress must vote to raise the borrowing limit

Power to Coin Money

• Exclusive federal authority to mint currency and regulate its value prevents states from creating competing monetary systems
• This power ensures monetary stability and a unified national economy, a direct response to the chaos of state-issued currencies under the Articles of Confederation
• The Federal Reserve System (created by Congress in 1913) now manages day-to-day monetary policy, though Congress retains ultimate constitutional authority over currency

Power of the Purse (Appropriations)

• Appropriations authority gives Congress control over all federal spending, determining how every government dollar is allocated
• This serves as a check on the executive: the President cannot spend money without congressional authorization, which limits executive power in concrete terms
• The budget process requires annual appropriations bills, giving Congress recurring leverage over executive branch priorities year after year

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War and Military Powers: National Defense Authority

The Constitution divides military authority between Congress and the President. Congress holds the power to authorize and fund military action, while the President serves as Commander-in-Chief. This division creates ongoing tension over war powers.

Power to Declare War

• Sole congressional authority to formally declare war ensures military action requires collective legislative approval, not a unilateral executive decision
• The Framers deliberately separated the power to declare war (Congress) from the power to conduct war (President) as a check on presidential power
• Modern practice has shifted toward presidential military action without formal declarations. Congress hasn't issued a formal declaration of war since World War II, which fuels ongoing constitutional debates. The War Powers Resolution of 1973 attempted to reassert congressional authority by requiring the President to notify Congress within 48 hours of committing forces and to withdraw them within 60 days absent congressional authorization.

Power to Raise and Support Armies

• Military establishment authority includes creating, funding, and maintaining all armed forces
• Budget control over military spending gives Congress practical leverage over defense policy and military operations, often more than formal war declarations do
• Organizational authority extends to military academies, force structure, regulations governing military discipline, and the overall size of the armed forces

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Legislative Powers: Making and Shaping Law

Congress's core function is lawmaking, but this power extends beyond simply passing bills. The Constitution grants Congress broad authority to regulate national affairs through the Commerce Clause and the Necessary and Proper Clause, which together have dramatically expanded federal legislative reach over time.

Power to Make Laws

• The bicameral requirement means legislation must pass both the House and Senate in identical form before reaching the President for signature or veto
• The Necessary and Proper Clause (also called the Elastic Clause, Article I, Section 8, Clause 18) allows Congress to pass laws "necessary and proper" for executing its enumerated powers, creating implied powers
• McCulloch v. Maryland (1819) is the landmark case here. The Supreme Court ruled that Congress could charter a national bank even though that power isn't explicitly listed in the Constitution, because it was a reasonable means of carrying out enumerated powers like taxing and borrowing.

Power to Regulate Commerce

• The Commerce Clause (Article I, Section 8, Clause 3) gives Congress authority over interstate and international trade, preventing states from creating trade barriers against each other
• Gibbons v. Ogden (1824) broadly interpreted this power, establishing that "commerce" includes navigation and virtually any commercial activity crossing state lines
• Congress has used the Commerce Clause to justify expansive federal legislation, from civil rights laws (like the Civil Rights Act of 1964, which banned discrimination in businesses engaged in interstate commerce) to environmental regulations
• Limits exist, though. In United States v. Lopez (1995), the Supreme Court struck down the Gun-Free School Zones Act, holding that Congress cannot regulate activity with no substantial connection to interstate commerce. This case is a key example of the Court placing boundaries on congressional power.

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Checks on Other Branches: Maintaining Balance

Several congressional powers exist specifically to check the executive and judicial branches, ensuring no single branch dominates the federal government. These powers reflect the Framers' commitment to separation of powers and checks and balances.

Power of Impeachment

• House impeaches, Senate tries: the House needs only a simple majority to impeach (formally charge), but the Senate requires a two-thirds vote to convict and remove from office
• The "high crimes and misdemeanors" standard applies to the President, Vice President, and all federal officers including judges. The Constitution doesn't precisely define this phrase, which means Congress has significant discretion in deciding what qualifies.
• Impeachment is a political process, not a criminal trial. Conviction results in removal from office, not imprisonment. It's Congress's ultimate check on executive and judicial misconduct.

Power to Override Presidential Vetoes

• A two-thirds majority in both chambers is required to override, making successful overrides relatively rare (historically, only about 7% of vetoes have been overridden)
• This mechanism ensures Congress can enact laws despite presidential opposition when supermajority support exists
• Overrides typically require significant bipartisan cooperation in practice, which is why they're uncommon in a polarized Congress

Power to Confirm Presidential Appointments

• Senate advice and consent (Article II, Section 2) is required for Supreme Court justices, federal judges, cabinet members, ambassadors, and other key positions
• Confirmation hearings before committees like the Senate Judiciary Committee allow scrutiny of nominees' qualifications, ideology, and backgrounds
• This power is especially significant for judicial appointments, since federal judges serve life terms and can shift the ideological balance of the courts for decades

Power to Ratify Treaties

• A two-thirds Senate vote is required for treaty ratification, ensuring broad consensus on international commitments
• Presidents negotiate treaties, but they have no legal force without Senate approval, requiring executive-legislative collaboration
• Presidents sometimes bypass the treaty process by using executive agreements, which don't require Senate ratification. This creates ongoing constitutional tension about the proper scope of each branch's foreign policy authority.

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Structural Powers: Shaping Government Institutions

Congress holds authority to organize the federal government itself, including creating courts and proposing constitutional changes. These powers allow the legislative branch to shape the very structure within which all branches operate.

Power to Establish Federal Courts

• Article III courts below the Supreme Court are created entirely by congressional statute, not by the Constitution itself. The Constitution only mandates one Supreme Court; everything else is up to Congress.
• Jurisdiction control allows Congress to determine what types of cases lower federal courts can hear, within constitutional limits
• Structural authority includes setting the number of judges on each court, creating specialized courts (like bankruptcy courts), and organizing the entire federal judiciary

Power to Propose Constitutional Amendments

• A two-thirds majority in both the House and Senate is required to propose amendments to the states
• Proposed amendments must then be ratified by three-fourths of state legislatures (or state conventions, though this method has only been used once, for the 21st Amendment)
• This power allows Congress to respond to Supreme Court decisions it disagrees with. For example, the 14th Amendment overturned the Dred Scott decision, and the 16th Amendment overturned Pollock v. Farmers' Loan & Trust Co. by authorizing a federal income tax.

Power to Set Its Own Rules and Punish Members

• Internal autonomy means each chamber establishes its own procedures for debates, voting, and committee operations
• Disciplinary authority includes censure and expulsion of members for misconduct (expulsion requires a two-thirds vote)
• Procedural differences between the chambers are significant: the Senate's filibuster (requiring 60 votes for cloture to end debate) versus the House Rules Committee's tight control over debate time and amendment procedures

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Quick Reference Table

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Self-Check Questions

1. Which two congressional powers most directly illustrate the "power of the purse" as a check on the executive branch, and how do they differ in function?

2. Compare the power to declare war with the power to raise armies. Why did the Framers separate these functions, and which gives Congress more practical leverage over military policy today?

3. If an FRQ asks you to explain how Congress checks the judicial branch, which three powers would you discuss, and what constitutional principle do they collectively demonstrate?

4. The Commerce Clause and the Necessary and Proper Clause have both been used to expand congressional authority. How do Gibbons v. Ogden (1824), McCulloch v. Maryland (1819), and United States v. Lopez (1995) illustrate the scope and limits of these powers?

5. Identify two congressional powers that require a two-thirds supermajority and explain why the Framers set this higher threshold for those specific actions.