Cases filed after court rules President Trump can't do that. On Tuesday, the 2nd U.S. Circuit Court of Appeals ruled President Trump is not allowed to block people on his Twitter account, because the social-media page was used for “official purposes” and such a move would violate the First Amendment. Within hours, one of the far-left newcomers to Congress who has done the same thing, Rep. Alexandria Ocasio-Cortez, D-N.Y., also was sued. The Associated Press reported the decision in Trump’s case “is likely to reverberate throughout politics after the Manhattan court warned that any elected official using a social-media account...