Truckers are feeling the impact of on-again, off-again tariffs, especially those who work to transport vehicles and auto parts between the U.S. and Canada.

While there is still a steady flow of traffic across the Ambassador Bridge connecting Detroit and Canada, including plenty of 18-wheelers, truckers and businesses say uncertainty is still affecting things.

Truckers fear they may not have job security in the future if tariffs lessen the flow of goods between America and its northern neighbor.

The border crossing between Detroit and Windsor, Ontario, is the busiest along the northern border. More than one and a half million Canadian........

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