The deal’s collapse means 50 percent tariffs on $20 billion worth of Canadian goods now go into effect, hitting products ranging from alcohol to hockey skates.

WASHINGTON—The United States and Canada, historic allies along an undefended border, fell deeper into a trade war Saturday marked by angry recriminations and new tariffs that are expected to raise ...

Canada and the United States failed to reach a trade agreement late Friday, triggering 50% tariffs on roughly $20 billion worth of Canadian goods and setting the stage for a retaliatory response ...

Trade talks with Canada collapse hours before a new tariff deadline. President Trump threatens Iran with an "Economic D-Day" the same week the U.S. national debt surpassed $40 trillion.