disruptions at auto plants in canada and several states. the supply chain breakdown has flooded paul russo's detroit-area warehouse. these are for auto makers. >> that is correct. >> reporter: who can't make cars without it. >> that's correct. without this material, you're not making a car. >> he has five million tons of steel and aluminum that should have been delivered across the closed ambassador bridge to canadian auto pants. how frustrating is this for you? >> i'm throwing my hands up saying guys i can't do nothing. i can't control the border. >> reporter: and it's costing you money. >> it's costing us big dollars. >> reporter: for auto makers it's costing $700 million and counting. some are chartering cargo planes, and major facilities could be shut down if the blockade drags on. >> i know shutdowns are jussse s mounting on the canadian government, who today declared a state of emergency over the blockade. >> this unlawfull activity has to end, and it will end.