United States v. South-Eastern Underwriters

Supreme Court of the United States · 1944 · Constitutional Law

322 U.S. 533 (1944)

Updated July 29, 2026

Constitutional LawCommerce ClauseSherman ActInterstate CommerceInsurance Regulationinsuranceantitrustrate fixing

Facts

A federal indictment charged the South-Eastern Underwriters Association, nearly 200 stock fire insurance companies, and individuals with conspiring to fix noncompetitive premium rates and agents' commissions and to monopolize fire and allied-lines insurance in six southeastern states. The indictment alleged that the conspirators controlled about 90 percent of the relevant stock fire insurance business in those states and used boycotts, coercion, intimidation, and policing through bureaus and local boards to enforce the scheme. Premiums collected in the six states were largely transmitted to out-of-state home offices, and losses were paid by checks or drafts sent back from those home offices to local agents for delivery to policyholders. The District Court treated the indictment as challenging the entire business of insurance, not merely local contract formation, and dismissed it on the ground that insurance is not commerce.

Issue

Whether the Sherman Act was intended to prohibit conduct by fire insurance companies that restrains or monopolizes interstate fire insurance trade, and whether fire insurance transactions stretching across state lines constitute commerce among the several States so as to be subject to regulation by Congress under the Commerce Clause.

Rule

Commerce under the Commerce Clause includes practical, multistate business intercourse and trade, not merely the shipment of tangible goods. A business is not deprived of its interstate character merely because it is built upon local contracts, and Congress may regulate insurance transactions that form a continuous interstate stream of premiums, payments, documents, and communications across state lines. The Sherman Act's broad language applies to every person engaged in business whose activities restrain or monopolize trade or commerce among the states, including the interstate insurance business.

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One of 10 multiple-choice questions for this case. Pick an answer to see why.

Pine Harbor Casualty, chartered in Delaware, sells commercial fire policies through agents in Ohio, Michigan, and Indiana. Premiums are collected locally but transmitted each week to the insurer's Philadelphia headquarters, and covered losses are paid by drafts mailed back to local agents for delivery to policyholders.

If Congress enacts a statute regulating such multistate insurance transactions, which is the strongest argument that the statute is constitutional?

Explanation. The majority held that insurance transactions stretching across state lines can constitute commerce among the states when viewed practically as an integrated course of business. The key is the continuous interstate flow of premiums, claim payments, papers, and communications, not merely whether tangible goods move or where the final contract is signed.