Sun, July 8, 2012 12:00pmWhen an American president is meeting a foreign leader, it's important to respect the country's customs. Many countries have an office for that. This week, the chiefs of protocol from 100 countries met in Washington, D.C., for their first annual conference. Guest host David Greene speaks with Ambassador Capricia Penavic Marshall, the chief of protocol of the U.S., about her role in diplomatic efforts.
