MEXICO CITY (Reuters) - Mexican President Vicente Fox claimed victory Friday in his campaign against the U.S. death penalty after Oklahoma's governor spared a Mexican death row prisoner, and called on other U.S. states to follow suit. Oklahoma Gov. Brad Henry commuted the death sentence of Mexican Osvaldo Torres Thursday, saying there were violations of international law in the case. Torres, 29, whose cause was taken up around the world, was scheduled to be executed Tuesday for his role in the 1993 murder of an Oklahoma couple. "We are pleased that this occurred and now we can take care of...