The first prolonged and impassioned controversy in the Congress involving a pure food issue took place in 1886, pitting the reigning champion, butter, against a challenger, oleomargarine. Butter won, and oleomargarine was taxed and placed under other restraints that persisted on the Federal level until 1950. The debate in 1886 between the defenders of a natural food and those of its alleged artificial substitute centered not only on matters of vested interest, but also pondered concerns about the public health, issues of governmental authority, and the myths in which were enshrined the meaning of the American experience. Such themes re-echoed in Congressional chambers as Senate and House later debated broader bills to control food and drugs in interstate commerce. The first broad bill had been introduced in 1879, although a decade passed before Congress displayed serious interest.