Several states have passed laws in recent years related to social-media use by children, spurring a series of legal fights.

Judge Blocks F.T.C. Investigation of Media Matters The agency began looking into the liberal watchdog group’s research critical of Elon Musk and his social media platform, X, in May.

A coalition of tech companies sued the state Thursday, asking a federal judge to strike down a law requiring them to warn young users about the impacts of using their social media products.