Chapter 3 Key Takeaways

The Constitution as engineered object

The 1787 Constitution is a designed system that does six jobs: replaces the Articles of Confederation, distributes power vertically (federalism), distributes power horizontally (separation of powers), protects minority rights from majority faction while enabling majority governance, was designed to be ratifiable, and was designed to be durable.
The seven Articles structure the system: Article I creates Congress and lists its powers, Article II creates the presidency, Article III creates the courts, Article IV governs interstate relationships, Article V provides the amendment procedure, Article VI establishes federal supremacy, Article VII set the ratification process.
The most consequential provisions for modern federal power are in Article I, Section 8 (the enumerated powers, especially the Commerce Clause, the Necessary and Proper Clause, and the Tax and Spending Clause) and the Take Care Clause of Article II, Section 3.

The original 1787 Constitution had no Bill of Rights; it was added in 1791 as a condition of ratification.
The Bill of Rights, as originally adopted, applied only to the federal government. Application to the states came through 14th Amendment incorporation, primarily after 1925 and most actively after the 1960s.

The Connecticut Compromise (Senate apportionment): equal state representation in the Senate, House by population. This trade-off has produced an increasingly disproportionate Senate as urbanization has continued.
The Three-Fifths Compromise: enslaved people counted as three-fifths of a person for representation and direct taxation. This gave slaveholding states extra political weight in both Congress and the Electoral College for the antebellum period.
The Slave Trade Clause: Congress could not prohibit the slave trade until 1808.
The Fugitive Slave Clause: free states had to return escaped enslaved people.
The original Constitution protected slavery in three explicit ways. This is a fact. The 13th and 14th Amendments abolished those protections.
The Electoral College: a compromise between direct election and congressional election that also gave slaveholding states extra weight. Has produced presidents who lost the popular vote (most recently 2000 and 2016).

Twenty-seven amendments have been ratified. The first ten (Bill of Rights) in 1791. The Reconstruction Amendments (13, 14, 15) after the Civil War. The Progressive Era amendments (16-19) between 1909 and 1920. Mid-20th-century amendments (20-26) responded to specific moments. The 27th was Madison's 1789 proposal that lay dormant until a Texas undergraduate revived it in 1992.
The 14th Amendment is the most legally consequential since the original founding. It is the engine of modern equal protection, due process, citizenship, and incorporation jurisprudence. Without it, very little of modern constitutional law makes sense.

Article V provides two paths to propose (2/3 of Congress, or 2/3 of state legislatures call a convention) and two paths to ratify (3/4 of state legislatures, or 3/4 of state ratifying conventions; Congress chooses).
Only one of the four possible procedural combinations has been used for any actual amendment: congressional proposal, state-legislature ratification.
The amendment threshold is unusually high by international standards. The U.S. Constitution has been amended much less frequently than most national constitutions.
Whether amendment should be easier or harder is a contested normative question. Both sides have serious arguments.

Originalism holds that the Constitution should be interpreted according to the public meaning the text had at the time of ratification. The strongest case is fidelity to text and constraint on judicial discretion. Justices Thomas, Alito, Gorsuch, Barrett, Kavanaugh, and Roberts are largely in this tradition.
Living constitutionalism holds that the Constitution's broad principles must be applied to changing circumstances. The strongest case is McCulloch v. Maryland's observation that the framers wrote a constitution intended to endure. Justices Brennan, Marshall, Breyer, and to varying degrees Sotomayor and Jackson have worked in this tradition.
Common-law constitutionalism (David Strauss) holds that the operative Constitution is the body of doctrine the Court has built case-by-case. As description of how the Court actually operates, it is strong. As prescription, it has tensions when precedent itself is contested.
All three schools are legitimate. Which to favor is a values question, not an empirical one.

The formal document depends on unwritten norms and conventions that fill gaps and constrain political behavior.
Examples: the peaceful transfer of power, Senate advice-and-consent, presidential financial disclosure, the filibuster, stare decisis.
When norms break, the formal rules turn out to be inadequate to do all the work the system needs.

The Constitution is both a legal document (justiciable, enforceable in court) and a political document (shared vocabulary, focal point for collective identity, constraint on what political actors can plausibly try). Both functions matter; they sometimes pull in different directions; healthy constitutional practice requires both to operate.