The US Justice Department has opened an antitrust investigation into several major television networks after they temporarily suspended participation in presidential press-pool coverage, according to the BBC. The inquiry follows a dispute over the White House's decision to withdraw credentials from CNN, MS Now and Politico.

The department has asked ABC, CBS, CNN, NBC and Fox News to provide communications connected to the pause. It is examining whether the networks' coordinated action may have violated the Sherman Act, the federal law used to police monopolistic conduct and anticompetitive agreements. A Justice Department spokesperson characterized the step as an investigation intended to determine whether antitrust law was breached, rather than a finding that any network had acted illegally.

Five networks stopped their presidential pool work for several days after the administration excluded reporters from the three news organizations. Pool arrangements allow a small group of journalists to cover events where space is restricted and distribute reporting, video and photographs to a wider set of outlets. Suspending that cooperation therefore affects access well beyond the organizations directly staffing the pool.

The investigated networks had not commented when the BBC published its report. Their silence leaves unanswered how they will characterize the pause, whether they coordinated operational details, and how they will respond to the department's demand for records. Those questions are central because simultaneous conduct alone does not establish an unlawful agreement.

The underlying access fight is also proceeding on a constitutional track. CNN, MS Now and Politico sued the administration, arguing that excluding them because of their coverage violated First Amendment protections. Their White House access was later restored following a judge's ruling. The administration had accused the outlets of publishing false accounts about its officials.

The episode comes amid broader changes to presidential press access. Earlier in the year, the White House said it would take control of a pool system long managed by the White House Correspondents' Association. The administration also restricted Associated Press access to limited-capacity spaces after the news agency continued using the name Gulf of Mexico rather than Gulf of America. The AP challenged that restriction in court.

The antitrust inquiry creates a separate legal question from those press-freedom disputes: whether the broadcasters' collective response amounted to prohibited coordination in a market. The Justice Department has not announced charges, and the information request should not be read as proof of wrongdoing. Its outcome may nevertheless shape how news organizations respond collectively when government access decisions affect the shared systems on which political coverage depends.