WASHINGTON (AP) — 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. The ban amounts to barely a ripple in $880 billion worth of annual two-way trade between the two northern neighbors. But it marks another ratcheting up of President Donald Trump’s second-term trade war with America’s and...