On August 30, 1890, President Benjamin Harrison signed the first U.S. law requiring inspection of meat products. From the article:
"Foreign Trade and Meat Inspection
Exports of U.S. livestock, as well as animal products, fell under increasingly more stringent restrictions by foreign countries. U.S. producers and packers urged the government to implement an inspection program that would enable them to compete in foreign markets.
On August 30, 1890, President Benjamin Harrison signed the first law requiring inspection of meat products. The law required that USDA, through the Bureau of Animal Industry, inspect salted pork and bacon intended for exportation. In 1891, this law was amended to require the inspection and certification of all live cattle and beef intended for exportation."