Union Pacific CEO Lance Fritz says trade disruptions are threatening to undermine an otherwise robust economy. The rail company, headquartered in Omaha, Nebraska, told the Omaha World-Herald that the current trade disruption: “Affects the 7,300 communities Union Pacific serves.” Specifically, the North American Free Trade Agreement (NAFTA) renegotiation effort is harming U.S. railways. About 40 percent of Union Pacific traffic …