For the first time in the history of the thorny relations between the two countries, the United States Justice Department used a Cuban law enforcement official as well as the findings of a Cuban investigation to prosecute a former CIA agent who led a decades-long terrorist campaign against Cuba. It’s true: the U.S. Government did not charge Luis Posada Carriles with terrorism or murder, but rather with denying that he had murdered and engaged in a campaign of terror. Even so, what is happening in El Paso is historic.