Who manages our borders is a question of some concern these days, but here's one thing we can feel totally secure about: As long as the US Fish and Wildlife Service is on the job, there will be no fishy flies entering the country. Just ask well-known Canadian fly-tier Warren Duncan. USFWS officials have finally cracked down on him, turning back one of his shipments to L.L. Bean and making him account for the contents of each fly. Previously, Warren had been getting away supplying American anglers with beautiful handcrafted salmon and trout flies without incident for some 30 years from his shop in east Saint John. The scoundrel.