A few months ago, a sign appeared in the gallery explaining that the Mao statue was put there by the Nixon Foundation and doesn't represent the point of view of the Federal Government, which now runs the library. Recently, it was replaced by another sign which notes that none of the statues--which include Winston Churchill, Charles De Gaulle, Leonid Brezhnev, Nikita Khrushchev, Anwar Sadat, Golda Meir, and Japanese premier Yoshida Shigeru--represent the government's views.
From the article: "A quote from Nixon on a wall explains his selections: 'They are leaders who have made a difference. Not because they wished it, but because they willed it.'"