The Federalist Papers, Federalist No. 42 summary
Federalist No. 42 of 85 · 11 min to read the paper
In Federalist No. 42, Madison defends constitutional powers over foreign relations and relations among the states, explaining how they repair weaknesses in the Articles of Confederation. He argues that common rules protect national authority, prevent interstate conflict, and support justice, while defending the delayed power to prohibit slave imports as an advance despite its limits.
What happens
- Madison supports federal control of diplomacy, maritime crimes, and foreign trade, identifying gaps in the Confederation’s authority.
- He regrets delaying the prohibition of slave imports until 1808 but defends the provision against opposing interpretations.
- He argues that federal regulation of interstate commerce prevents unfair charges and hostility among states.
- He supports removing contradictory restrictions on trade with Indian tribes and establishing consistent rules for money and measures.
- He explains how uniform naturalization and bankruptcy laws address conflicting state rules and opportunities for fraud.
- He endorses rules for recognizing state legal proceedings and supports post roads as a means of communication.

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In this paper
What to notice
The closing claim links practical federal powers to shared public interests. It supports post roads as a legitimate national concern.
Quick check
Why does Madison support a uniform national rule of naturalization?

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