Donald Trump’s increasingly strident approach to relations with Canada is provoking fear about the potential consequences north of the border and questions about just how serious the U.S. president-elect actually is.

"President-elect Trump has proposed various tariff plans at various times on the import of foreign goods, including a 10% blanket tariff on all imports, a 60% tariff on Chinese goods and 25% tariffs on goods from Mexico and Canada," says Ben Johnston, chief operating officer of Kapitus, a financial services firm that focuses on small business.

Let’s have faith that Trump will reject the Biden administration’s politically motivated interference in the deal or get an even bigger, more spectacular one.

The onetime dynamo is fighting to revive a takeover by Nippon Steel. Other tie-ups could also face obstacles, and going it alone could force cutbacks.

Logical, but not perfect. The Wall Street Journal pointed out that a Cliffs-U.S. Steel combination "would control 100% of U.S. blast furnace production, 100% of domestic steel used in electric-vehicle motors, and 65% to 90% of other domestic steel used in vehicles."

United States Steel Corp. CEO David Burritt in an interview with CNBC appealed to President-elect Donald Trump to rescue the company's $14.9 billion acquisition by Nippon Steel Corp.

A 123-year-old steelmaker’s fate could yet become a restraint on modern-day executive power. United States Steel and suitor Nippon Steel have gone to court over U.S. President Joe Biden’s decision to nix their $15 billion deal.

Canada is looking to target American steel, ceramics, plastics and orange juice with retaliatory tariffs in response to threats of hefty duties on Canadian imports by the incoming Trump administration.

Canada could impose retaliatory tariffs against the United States in response to Donald Trump's economic threat. Experts say they could target industries in Republican states.

Prime Minister Justin Trudeau says he thinks U.S. president-elect Donald Trump is drumming up drama on Canadian statehood to detract from tariff talks.

For the first time since U.S. president-elect Donald Trump threatened hefty tariffs on Canadian goods, Prime Minister Justin Trudeau took his argument against the import taxes directly to the American public.