Human smugglers used B.C. freight trains to move people across border, U.S. says / Federal officials plan to impose a mandate that freight railroads operate trains with two-person crews, adopting a policy that railroads have opposed and Congress failed to legislate. / U.S. Finalizes Rule Requiring Two-Person Crews on Freight Trains / U.S. to Impose Two-Person Crew Mandate on Freight Trains / A year after Ohio derailment, U.S. freight trains remain largely unregulated / Over a half-billion dollars in railroad freight stuck at Texas border crossings amid migrant battle