https://www.reuters.com/article/us-tech-antitrust-delrahim/u-s-doj-antitrust-chief-says-working-with-states-on-tech-investigation-idUSKCN1VA1OR >The U.S. Department of Justice is working with state attorneys general to investigate the market power of technology companies, the department's antitrust chief, Makan Delrahim, said on Tuesday.