President Trump made one of the biggest gambles of his presidency Tuesday by initiating sweeping tariffs with no clear rationale on imports from Canada, Mexico and China, triggering a trade war that risks undermining the United States economy.
His actions have upended diplomatic relations with America’s largest trading partners, sent markets tumbling, and provoked retaliation on U.S. products — leaving businesses, investors and economists puzzled as to why Mr. Trump would create such upheaval without extended negotiations or clear reasoning.
