The Federal Trade Commission and 17 states on Tuesday sued Amazon, alleging the online retailer illegally wields monopoly power that keeps prices artificially high, locks sellers into its platform and harms its rivals. WSJ: The FTC’s lawsuit, filed in Seattle federal court, marks a milestone in the Biden administration’s aggressive approach to enforcing antitrust laws and has been anticipated for months. The agency’s chair, Lina Khan, is a longtime critic of Amazon who wrote in the Yale Law Journal in 2017 that earlier generations of competition cops and courts abandoned the law’s concerns over conglomerates such as Amazon. The FTC and states alleged that Amazon violated antitrust laws by using anti-discounting measures that punished merchants for offering lower prices elsewhere. The government also said sellers on Amazon were compelled to use its logistics service if they want their goods to appear in Amazon Prime, the subscription program whose perks include faster shipping times, the FTC said.