On June 30, 1906, U.S. President Theodore Roosevelt approved a bill to ensure the purity of food and medicine used by Americans. This was the second severe restriction on adulterated goods in 1906.

The new law will come into force on January 1, 1907. It prohibits false labeling of goods and the manufacture and transportation of adulterated food and drugs within the United States. In May, at the urging of the president, Congress passed legislation requiring all meat products intended for human consumption to be inspected before being packaged and shipped.

Roosevelt first became interested in meat after reading Upton Sinclair's "The Jungle," which exposed the squalor of the Chicago packing plant. Sinclair described the slaughter of sick animals in the slaughterhouse, the filthy handling workers, and the rodents running around the factory. At first the president was skeptical of the author's description. He later conferred with Sinclair, and after finally being convinced that the book's description was true, the president urged the establishment of a meat inspection law.

Under the new food and drug purity law, which covers all food, beverages and condiments consumed by humans and livestock, offenders found to have used counterfeit trademarks or adulterated food or medicine will be fined $500 or one year in prison, or both.