On February 24, 2022, the U.S. Department of Justice (“DOJ”) filed suit to block UnitedHealth’s proposed acquisition of Change Healthcare. UnitedHealth owns the largest health insurer in the U.S., while Change Healthcare is a data company whose software is the largest processor of health insurance claims in the U.S. The DOJ alleges that the acquisition, if allowed to proceed, would give UnitedHealth unfettered access to rival health insurers’ competitively sensitive information, including health insurance pricing. According to the complaint, this would lessen competition and “result in higher cost, lower quality, and less innovative commercial health insurance for employers, employees, and their families.”