SAN FRANCISCO — The federal ban on TikTok must be put under the finest judicial microscope to determine its constitutionality, the Electronic Frontier Foundation (EFF) and others argued in a friend-of-the-court brief filed Wednesday to the U.S. Court of Appeals for the D.C. Circuit. The amicus brief says the Court must review the Protecting Americans from Foreign Adversary Controlled Applications Act — passed by Congress and signed by President Biden in April — with the most demanding legal scru...