The US Secret Service protects presidents and their families. SAUL LOEB/AFP/Getty Images 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 names are for security purposes, but they often get leaked or are overheard at events. Secret Service code names are among the worst-kept secrets in Washington. Though they're intended for internal use, the moni