Tomorrow, the U.S. Supreme Court will decide whether it should step in to block or delay the implementation of a law that would ban TikTok from operating in the U.S. If not blocked, the law will force TikTok to cease operations in the U.S. on January 19, unless its Chinese corporate owner (Bytedance) sells to a buyer not controlled by a foreign adversary. The case hinges entirely on constitutional arguments pertaining to national security and free speech. The Justices will hear no evidence about...