In a U.S. Supreme Court case decided in 1938, United States v. Carolene Products Co., the court upheld a federal statute prohibiting a type of "milk" known as filled milk (skim milk compounded with a fat or oil other than milk fat in order to resemble milk or cream) from being shipped in interstate commerce. However, this case is particularly known for its footnote 4, which established the "rational basis test." The court in Carolene Products Co. stated that the "rational basis test" should not be applied to "discrete and insular minorities." In Graham v. Richardson, a U.S. Supreme Court case decided years later (in 1971), the court found that classifications based on people's status as aliens constituted a "discrete and insular" minority. The "rational basis test" created in Carolene Products and interpreted by Graham is an example of which of the following: Administrative Law Contract Law Procedural Law O Statutory Law Case Law