15 U.S.C. §§12-27, an antitrust law enacted in 1914 to clarify and supplement the Sherman Antitrust Act of 1890. It prohibits under various circumstances exclusive sales contracts, local price cutting to freeze out competitors (i.e., predatory pricing), rebates, interlocking directorates in corporations capitalized at $1 million or more in the same field of business, and inter-corporate stock holdings.