Chinese activist Chen in N.Y.

Chinese activist Chen in N.Y.

NEW YORK, United States - Chinese human rights activist Chen Guangcheng (in wheelchair) is pictured with his wife Yuan Weijing (to his L) at a park in New York on May 20, 2012. Chen arrived in the United States from Beijing the previous day with his family.

Chinese activist Chen in N.Y.

Chinese activist Chen in N.Y.

NEW YORK, United States - Chinese human rights activist Chen Guangcheng (in wheelchair) chats with his wife Yuan Weijing at a park in New York on May 20, 2012. Chen arrived in the United States from Beijing the previous day with his family.

Chinese activist Chen arrives in U.S.

Chinese activist Chen arrives in U.S.

NEW YORK, United States - Chinese human rights activist Chen Guangcheng (L), accompanied by his wife Yuan Weijing (R), responds to applause and a welcome with a smile at New York University in New York on May 19, 2012. He arrived the same day in the United States from Beijing to study at the university as a visiting scholar.

Chinese activist Chen in N.Y.

Chinese activist Chen in N.Y.

NEW YORK, United States - Chinese human rights activist Chen Guangcheng (in wheelchair) chats with his wife Yuan Weijing at a park in New York on May 20, 2012. Chen arrived in the United States from Beijing the previous day with his family. (Kyodo)

Chinese activist Chen in N.Y.

Chinese activist Chen in N.Y.

NEW YORK, United States - Chinese human rights activist Chen Guangcheng (in wheelchair) is pictured with his wife Yuan Weijing (to his L) at a park in New York on May 20, 2012. Chen arrived in the United States from Beijing the previous day with his family. (Kyodo)

Chinese activist Chen arrives in U.S.

Chinese activist Chen arrives in U.S.

NEW YORK, United States - Chinese human rights activist Chen Guangcheng (L), accompanied by his wife Yuan Weijing (R), responds to applause and a welcome with a smile at New York University in New York on May 19, 2012. He arrived the same day in the United States from Beijing to study at the university as a visiting scholar. (Kyodo)