FORT LAUDERDALE, Fla. — Two men promised to smuggle Cuban migrants into the United States via Mexico, but instead they tortured and extorted their victims, prosecutors say.Reynaldo Marquez Crespo, 41, and Jancer Sergio Ramos Valdes, 33, both Cuban, face charges of alien smuggling and kidnapping in a South Florida federal court.Crespo and Valdez promised their victims safe passage across the Yucatan Straits, the body of water that separates Cuba from Mexico, on go-fast boats and then over land across Mexico to the United States border sometime during January 2019, according to court documents.B...