InvestmentsTop Global NewsMarketsReal Estate US Justice Department teams up with states on probe of Big Tech firms By financialnews_rlv83x - August 20, 2019 0 173 The U.S. Justice Department is working with a group of more than a dozen state attorneys general as it moves forward with a broad investigation into major technology companies, the department’s antitrust chief, Makan Delrahim, said on Tuesday.