Mexico's incoming President, Enrique Pena Nieto, left, smiles as he stands with outgoing President Felipe Calderon during the inauguration ceremony at the National Congress in Mexico Ci

 

              Mexico
Mexico's incoming President, Enrique Pena Nieto, left, smiles as he stands with outgoing President Felipe Calderon during the inauguration ceremony at the National Congress in Mexico City, Saturday, Dec. 1, 2012. Pena Nieto took the oath of office as Mexico's new president on Saturday, bringing the old ruling party back to power after a 12-year hiatus amid protests inside and outside the congressional chamber where he swore to protect the constitution and laws of the land. (AP Photo/Alexandre Meneghini)