History of the Food and Drug Administration
In June 1906, President Theodore Roosevelt signed into law the Food and Drug Act, also known as the "Wiley Act" after its chief advocate. The Act prohibited, under penalty of seizure of goods, the interstate transport of food which had been "adulterated," with that term referring to the addition of fillers of reduced "quality or strength," coloring to conceal "damage or inferiority," formulation with additives "injurious to health," or the use of "filthy, decomposed, or putrid" substances. The act applied similar penalties to the interstate marketing of "adulterated" drugs, in which the "standard of strength, quality, or purity" of the active ingredient was not either stated clearly on the label or listed in the "United States Pharmacopoeia" or the "National Formulary". The act also banned "misbranding" of food and drugs. The responsibility for examining food and drugs for such "adulteration" or "misbranding" was given to Wiley's USDA Bureau of Chemistry.
Nondelegation doctrine
For example, the Food and Drug Administration (FDA) is an agency in the Executive branch created by Congress with the power to regulate food and drugs in the United States. Congress has given the FDA a broad mandate to ensure the safety of the public and prevent false advertising, but it is up to the agency to assess risks and announce prohibitions on harmful additives, and to determine the process by which actions will be brought based on the same. Similarly, the Internal Revenue Service has been given the responsibility of collecting taxes that are assessed under the Internal Revenue Code. Although Congress has determined the amount of the tax to be assessed, it has delegated to the IRS the authority to determine how such taxes are to be collected. Administrative agencies like these are sometimes referred to as the Fourth Branch of government.