Donald Trump has framed this moment in Canada-U.S. relations as something much larger than a trade war. He's right.

CHICAGO (AP) — President Donald Trump's barrage of tariffs — and threats of even more — has strained the United States' longstanding relationship with Canada.

US President Donald Trump slammed Canada on Sunday, saying the country wanted "the benefits of being a State, without being one", in response to Canadian Prime Minister Mark…