Taft, Harry S. Truman, and Richard Nixon, as well as onetime owner Donald Trump. For other world leaders, the Plaza Hotel kept a set of national flags, so that an appropriate one could be displayed whenever a foreign head of state visited. Chiang Ching-kuo, at the time the Vice Premier of the Republic of China, was shot by Taiwanese student Peter Huang in an attempted assassination at the hotel on April 24, 1970. The Plaza Hotel has hosted diplomatic events, as in September 1985, when the finance ministers of several countries signed the Plaza Accord, by which the U.S. dollar was depreciated in relation to other currencies. Receptions The Terrace Room has frequently been used for press conferences, luncheons, and receptions. For instance, it hosted a 1956 press conference where Laurence Olivier and Marilyn Monroe talked about their upcoming film The Prince and the Showgirl. At a press conference in the Terrace Room in 1968, Richard Burton and Elizabeth Taylor discussed their film Dr. Faustus. During the Beatles' 1964 stay at the hotel, visitors were allowed to take pictures with the Beatles in the Terrace Room. Benefits and weddings Upon the Grand Ballroom's opening in 1921, it immediately became popular as a venue for debutante balls, including those in honor of Joan Whitney Payson and Cathleen Vanderbilt. The rebuilt ballroom hosted social benefits, such as a dinner honoring physicist Marie Curie in 1929, and a meeting of the Girls Service League in 1935 that was attended by U.S. first lady Eleanor Roosevelt. Following World War II, the Grand Ballroom again became a popular venue for debutante balls and benefits, including a disabled veterans' benefit called the December Ball, as well as an event benefiting the Kennedy Child Care Study Center in 1959. Writer Truman Capote hosted the "Black and White Ball" there in 1966, in honor of publisher Katharine Graham. Another popular venue for benefits was the Terrace Court, which hosted events such as the Mid-Winter Ball in 1949. The Grand Ballroom and Terrace Room have also been used for weddings and wedding receptions. For example, the Terrace Room held the reception for figure skater Sonja Henie's 1949 wedding to Winthrop Gardiner Jr. Peter Lawford and Patricia Kennedy Lawford's wedding reception was hosted in the ballroom in 1954, as was David Eisenhower and Julie Nixon Eisenhower's reception in 1968. The ballroom also hosted Donald Trump and Marla Maples's 1993 wedding.