History of United States antitrust law

The history of United States antitrust law is generally taken to begin with the Sherman Antitrust Act 1890, although some form of policy to regulate competition in the market economy has existed throughout the common law's history. Although "trust" had a technical legal meaning, the word was commonly used to denote big business, especially a large, growing manufacturing conglomerate of the sort that suddenly emerged in great numbers in the 1880s and 1890s. The Interstate Commerce Act of 1887 began a shift towards federal rather than state regulation of big business. It was followed by the Sherman Antitrust Act of 1890, the Clayton Antitrust Act and the Federal Trade Commission Act of 1914, the Robinson-Patman Act of 1936, and the Celler-Kefauver Act of 1950.

Common law

Restraint of trade

Mogul Steamship Co Ltd v McGregor, Gow & Co [1892] AC 25, a UK House of Lords case condoning cartels shortly after the Sherman Act 1890 was passed

Late 19th century

During the late 19th century hundreds of small short-line railroads were being bought up and consolidated into giant systems. Separate laws and policies emerged regarding railroads and financial concerns such as banks and insurance companies. Advocates of strong antitrust laws argued that for the American economy to be successful, it requires free competition and the opportunity for individual Americans to build their own businesses. As Senator John Sherman put it, "If we will not endure a king as a political power we should not endure a king over the production, transportation, and sale of any of the necessaries of life." Congress passed the Sherman Antitrust Act almost unanimously in 1890, and it remains the core of antitrust policy. The Act makes it illegal to try to restrain trade or to form a monopoly. It gives the Justice Department the mandate to go to federal court for orders to stop illegal behavior or to impose remedies.