U.S.-Canada relations, already tense, are likely to deteriorate further after the United States went ahead with a decision to ban nearly $1 billion worth of Canadian imports, including alcoholic beverages, dairy products and motorcycles. Read more: ↧ US ban on $1 billion worth of Canadian imports goes into effect U.S.-Canada relations, already tense, are likely to deteriorate further after the United States went ahead early Tuesday with a decision to ban nearly $1 billion worth of Canadian imports, including alcoholic beverages, dairy products and motorcycles