President Donald Trump's Secret Service code name is "Mogul," and first lady Melania Trump's is "Muse." Here's what other presidents have been called.

The United States Secret Service originally used code names for important figures and places for security reasons, choosing unambiguous words that can be pronounced and understood clearly over radio, ...

First families get their Secret Service code names at the very beginning of a presidential campaign. Presidents get to choose from a list provided by the White House Communications Agency. The code ...