Some friends of mine in Canada are both big smokers, and they order all their tobacco to a PO box in Maine and bring it across the border piece meal. They won't bat an eyelash at an otherwise polite and uneventful person crossing the border wit an allowable amount of tobacco (200g, 50 cigars, or a carton of cigarettes, is the theoretical limit, although I wouldn't try to bring all that across when you say you're staying for a couple day visit LOL). I have brought more than 200g across though, and a friend of mind brings 1.5lb box of stokkebye flake across every time he goes. He just declares it as "one container of pipe tobacco for my own use".