https://www.reuters.com/article/us-congress-tech-antitrust/u-s-lawmakers-take-jabs-at-amazon-big-tech-in-antitrust-hearing-idUSKCN1UB108 >Lawmakers on the House Judiciary Committee's antitrust panel pressed an executive from Amazon.com Inc on Tuesday about allegations that it competed against its own sellers and pushed them to buy advertising and fulfillment services.