For Dining and Diplomacy; The Clinton White House's Tables for Queen Elizabeth II's visit. Gaffes in this setting are long remembered. For example, Jimmy Carter's 1979 state dinner for Mexican president, Jose Lopez Portillo. Carter shocked his guests with an indiscreet joke about getting "Montezuma's revenge" (a severe diarrhea) while visiting Mexico. And protocol can only go so far when so many ambitious people are going to be crammed into one room.