The Core

"Prior to her position at Columbia, Khan was counsel to the House Judiciary Antitrust Subcommittee, where she helped lead an investigation of competition in the technology sector. The probe concluded that Amazon.com Inc., Apple Inc., Facebook Inc. and Alphabet Inc.’s Google all wield monopoly power in their respective markets."

https://www.macon.com/news/politics-government/national-politics/article252170363.html