Canada's retaliatory tariffs on $20B in U.S. goods take effect
Canada's steep retaliatory tariffs on $20 billion in U.S. goods took effect just after midnight ET on Tuesday, extending the trade war between the two countries.

<p>Canada's steep retaliatory tariffs on $20 billion in U.S. goods took effect just after midnight ET on Tuesday, extending the trade war between the two countries.</p>