The argument in four moves
1. They thought the federal government was already limited
If Congress only had enumerated powers, some founders asked why a bill of rights was needed to forbid abuses of powers the federal government had never received.
2. They feared the wrong inferences
Listing some rights might suggest that unlisted rights were less secure, or that the government had powers broad enough to need those express limitations.
3. They trusted constitutional structure more than paper barriers alone
Some Federalists believed separation of powers, federalism, and a government of delegated authority offered stronger protection than declarations standing by themselves.
4. They feared the politics of reopening ratification
Before the Constitution was secure, amendments could become a procedural weapon that threatened delay, renewed bargaining, and even disunion.
Hamilton and Madison in their own words
“bills of rights... are not only unnecessary in the proposed constitution, but would even be dangerous”
Hamilton's Federalist 84 formulation is the cleanest statement of the Federalist worry: a bill of rights might create constitutional confusion rather than remove it.
“all not given retained—Bill of powers—needs no bill of Rhts”
In his June 1789 notes, Madison compresses one of the central Federalist objections: if the federal government only has delegated powers, rights are already protected by the fact that ungranted power remains ungranted.
“dispar[a]ge other rights—or constructively enlarge”
Madison's notes capture the two classic dangers: enumerating some rights may undervalue others, and rights language may imply power broad enough to require the limitation.
“opening a door for endless and dangerous contentions among the states”
Madison's January 1789 letter explains the political timing problem. Before ratification was secure, previous amendments could reopen the whole settlement and risk the Union itself.
Were they against rights?
No—that is the most important distinction. Some founders opposed a federal bill of rights in that moment, but they were not thereby opposed to liberty, free press, conscience, or jury protections. Their question was constitutional and strategic: what is the safest way to secure rights under the particular structure being proposed?
That is why Federalist 84 matters so much. Hamilton is not writing, “rights are unnecessary.” He is writing that under a constitution of delegated powers, the wrong kind of bill of rights may be unnecessary and even dangerous.
Why did they think a bill of rights was unnecessary?
Enumerated powers logic
The federal government was supposed to have only the powers expressly delegated to it. On that logic, many abuses were already outside its lawful authority.
Existing protections already in the text
Hamilton pointed to provisions such as no ex post facto laws, no bills of attainder, criminal jury protections, habeas safeguards, and the ban on titles of nobility.
Structure as protection
Federalists often trusted the broader constitutional design—federalism, separated powers, and limited delegation—to guard liberty better than a declaratory list alone.
Why did they think it could be dangerous?
The danger argument has two layers. First, if rights are listed selectively, people might infer that unlisted rights count for less. Second, if the Constitution says the government may not do X, ambitious interpreters may argue that the government must have some underlying power touching X, otherwise why mention it at all?
That is the core logic behind Hamilton's famous line: “For why declare that things shall not be done which there is no power to do?” The fear is not verbal clutter. The fear is that constitutional language can create interpretive handles for people disposed to usurp.
Why was timing such a big issue?
Before ratification, Madison and other Federalists feared that demanding prior amendments would blow open the entire constitutional bargain. The United States had struggled to move from the Articles of Confederation to a workable new framework at all. Reopening the entire structure before the new Constitution was in place could mean delay, fragmentation, or a return to failure.
This is why Madison's January 1789 letter is so revealing. He explains that he resisted “previous amendment” because it could create dangerous contention and give enemies of the Union another chance to promote dissolution. Once the Constitution was established, however, the circumstances changed.
So why did Madison later support amendments?
Because the argument shifted after ratification. Once the Constitution was secure, amendments no longer posed the same existential risk to union. Madison could then support a limited, targeted bill of rights that answered public anxieties while preserving the main constitutional framework.
That is why the right companion page here is why the Bill of Rights was added. The same man who once feared previous amendments later argued that amendments could quiet the public mind and guard essential rights without reopening the whole structure.
Why this debate still matters
This debate still matters because Americans still ask versions of the same question: is liberty safer through institutional design, through explicit rights language, or through both together? The founding answer was eventually both—but only after intense argument over whether declarations of rights were necessary, dangerous, symbolic, or indispensable.
That makes this one of the most useful founding disputes to understand. It reveals that even the strongest defenders of liberty disagreed sharply about the best constitutional way to secure it.
What to read next
Primary sources and further reading
- The Federalist No. 84 — Hamilton's direct statement that a bill of rights could be unnecessary and even dangerous under the proposed Constitution.
- Notes for Speech in Congress, ca. 8 June 1789 — Madison's compact list of objections to a bill of rights and his later explanation of why such amendments could still be useful.
- James Madison to a Resident of Spotsylvania County, 27 January 1789 — Madison's explanation of why he resisted prior amendments before ratification but later supported them after the Constitution was secure.
Read the founders' hesitation before you read their settlement
If this debate makes sense to you, the next move is comparison. Read Federalist 84, then read why the Bill of Rights was ultimately added, and use the rest of Publius to see why American constitutional liberty ended up resting on both structure and explicit rights language.