The Globe and Mail reports in its Monday edition that U.S. Treasury Secretary Scott Bessent signalled on Sunday that the Trump administration is still considering imposing an additional tariff on Canadian imports, creating more uncertainty in a trade war that is wreaking havoc on Canada's steel, aluminum, automobile and lumber sectors. The Globe's Niall McGee writes that in an appearance on CNN on Sunday, Mr. Bessent was asked whether U.S. President Donald Trump was going to follow through on his threat to bring in an additional 10-per-cent tariff in retaliation for an anti-tariff TV ad commissioned by the Ontario government. "We'll see," he responded. "I do think it was a big setback for the Canadian government, and the Premier of Ontario should be ashamed." Mr. Trump broke off trade talks with Canada on Oct. 23, citing the ad, and Prime Minister Mark Carney later apologized for it. Ontario's TV ad campaign in the United States featured 1987 footage of then-president Ronald Reagan criticizing trade wars as making little business sense. Mr. Bessent called the Ontario-funded ad campaign "unacceptable," and he accused Ontario Premier Doug Ford of "sending propaganda across the U.S. border via our own airwaves."