Those conservatives rightly outraged at the Trump indictment keep comparing his treatment to that given to Hillary, Biden, and Pence, each of whom admitted to violating national security laws. That’s the wrong argument because Trump is not similarly situated to those lawbreakers. Instead, because he was president when he took possession of the documents, Trump cannot be guilty of the crimes with which he’s charged. It starts with the Constitution, which created three equal branches of government: The legislative branch (Art. I), the executive (presidential) branch (Art. II), and the judiciary (Art. III). As part of his authority as the...