File photo U.S. President Barack Obama walks with family of
| By Reuters
File photo of U.S. President Barack Obama touring the Cesar E. Chavez National Monument walking with the widow of Chavez, Helen F. Chavez (C), and his son, Paul F. Chavez (L), in Keene, California, as part of his three day campaign swing in California and Ohio, October 8, 2012. REUTERS/Larry Downing
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