MINNEAPOLIS -- Federal investigators have ramped up their attack on synthetic drugs entering Minnesota and western Wisconsin, seizing more than two dozen shipments from South Carolina, Texas and Nevada, as well as several intrastate shipments, the Star Tribune has found.
The U.S. Postal Inspection Service, which conducted the seizures, isn't talking about its investigations, most of which remain active. Jeff Long, a spokesman, said only that it's the mission of the service to keep the mail safe.








