A federal tribunal in Mexico recently declared Felipe Calderon president elect. But that hasn't stopped his opponent, Manuel Lopez Obrador, from continuing the fight. Guests examine politics, protest and the next leader of Mexico.
Manuel Roig-Franzia, Mexico City bureau chief, The Washington Post
Jorge Castañeda, Mexico's foreign minister, 2000-2003
Pamela Starr, Latin American Analyst at the Eurasia Group