Mr. Pei is a Fellow of the American Institute of Architects and a Corporate Member of the Royal Institute of British Architects, and has also been elected to the American Academy of Arts and Sciences, the National Academy of Design, and the American Academy and Institute of Arts and Letters. In 1975 he was elected to the American Academy itself, which is restricted to a lifetime membership of fifty. Three years later he became Chancellor of the Academy, the first architect to hold that position, and served until 1980. Mr. Pei was inducted a "Membre de l'Institut de France" in 1984, and decorated by the French government as a Commandeur in the "Ordre des Arts et des Lettres" in 1985. On July 4, 1986, he was one of twelve naturalized American citizens to receive the Medal of Liberty from President Ronald Reagan. Two years later French president François Mitterrand inducted I. M. Pei as a Chevalier in the Légion d'Honneur, and in November 1993 he was raised to Officier. Also in 1993 he was elected an Honorary Academician of the Royal Academy of Arts in London. In 1997 the Académie d'Architecture de France elected him Foreign Member.