The tech giants had urged the U.S. Court of Appeals for the D.C. Circuit to summarily affirm dismissal of the suit by nonprofit group Freedom Watch and right-wing YouTube personality Laura Loomer. Their lawsuit, which a federal judge tossed in March, accused the companies of violating antitrust laws, the First Amendment, and the D.C. Human Rights Act by colluding to suppress conservative content.
Freedom Watch and Loomer...