President Donald Trump says he has instructed the U.S. Department of Justice to investigate oil companies after alleging that gasoline prices at the pump are not falling as quickly as crude oil costs. In posts and remarks, Trump accuses major fuel companies of “gouging” customers, arguing that pump prices have not adjusted downward in line with changes in underlying costs. The reports describe the action as an “immediate” DOJ probe, framed as a response to what Trump presents as a lack of price relief for consumers. While the outlets focus on Trump’s claims and his request for a Justice Department review, they do not detail any specific legal theory, targets, or evidence beyond the general allegation that pump prices are not keeping pace with falling crude costs. The DOJ investigation, if pursued, would determine whether any laws related to competition, consumer protection, or pricing practices have been violated.