She spent 5 years covering tech policy at CNBC, writing about antitrust, privacy, and content moderation reform. Newspapers and social media platforms that agree to deprioritize misinformation could be violating US antitrust law if they exclude rivals or lead to anticompetitive effects, the Justice Department says in a new legal filing. President Donald Trump’s DOJ Antitrust Division filed a statement of interest Friday in an existing lawsuit, Children’s Health Defense et al. But it also amounts to asking courts to wade into constitutionally protected editorial decisions by the press and online platforms. “This Antitrust Division will always defend the principle that the antitrust laws protect free markets, including the marketplace of ideas,” DOJ antitrust chief Abigail Slater said in a statement.