Monaco–United States relations the First World War. From 1956 until her death in 1982, the American-born Grace Kelly was married to Prince Rainier III. They made their first official visit to the United States in 1956. Until 2006 Monaco's only career Consul-General (Maguy Maccario Doyle in 2006) operated out of New York, but directed all the Honorary Consuls in placements worldwide. In December 2006, the United States and Monaco upgraded from consular to full diplomatic relations. Shortly thereafter, Craig Stapleton (ambassador to France) was accredited to Monaco, and ambassador Gilles Noghes became the first Monegasque ambassador to the United States. In 2009 Stapleton
Rainier III, Prince of Monaco with the French film actress Gisèle Pascal, whom he had met while a student at Montpellier University, and the couple lived at Saint-Jean-Cap-Ferrat. Rainier's sister, Princess Antoinette, wishing her own son to ascend the throne, spread rumours that Pascal was infertile. The rumours combined with a snobbery over Pascal's family origins ultimately ended the relationship. Rainier became the Sovereign Prince of Monaco on the death of Louis II on 9 May 1949. After ascending the throne, Rainier worked assiduously to recoup Monaco's lustre, which had become tarnished through neglect (especially financial) and scandal (his mother, Princess Charlotte, took a noted