Trump last month delayed the implementation of the 25% tariff against goods from neighboring countries when Canadian Prime Minister Justin Trudeau and Mexican President Claudia Sheinbaum rushed to reassure him they would crack down on illegal immigration and fentanyl smuggling.

Canada is both the largest source of imported goods to Maine and the state's biggest export market, accounting an estimated $6 billion in cross-border trade last year.

Canada is now poised to hit the U.S. with 25 percent tariffs on C$30 billion of U.S. goods, and the threat of C$125 billion more after a 21-day consultation period. The list of what would get tariffed immediately includes food — poultry, beef, fish, yogurt and more — along with various textiles and furniture.