Drug prohibition violence is beginning to affect multinationals -- and not only on the border. "It's Al Capone and Tony Soprano doing whatever they want with little or no actual police interference," says Tom Cseh, deputy director of Vance International, a security firm in Mexico City. Among the recent reported incidents: Caterpillar ordered 40 American employees with children home after a shootout at a school in Monterrey earlier this fall; oil-services giant Schlumberger (SLB) said prohibition violence in northern Mexico hurt third-quarter earnings; and Canadian mining company Goldcorp (GG) plans to build a landing strip to fly gold out of a mine instead of hauling it on unsafe highways.