Ever since a federal judge, James L. Robart, issued a temporary restraining order (TRO) against President Trump's executive order (EO) temporarily suspending admissions of aliens from seven Middle Eastern countries, the question whether the President's EO was lawful or not has reached a heated national debate. Experts, pundits, and analysts, as well as civic organizations and governmental bodies, brought many arguments in favor and against the said EO. Some have tried to provide clarity to the context in which the question arose, while others tried to obfuscate it. What virtually all of them have missed is this simple fact: They...