Smoke from wildfires blazing across Canada is once again wafting over huge portions of the Midwest and worsening air quality, with conditions particularly bad on August 1 in Minnesota, Iowa and Illinois.

The Canadian team working on a trade deal with the United States could walk away from talks in the wake of a U.S. decision to impose a 35% tariff on some goods from Canada, an adviser to Prime Minister Mark Carney said on Friday.

President Donald Trump has slammed Canadian imports with a 35 percent tariff hike, accusing Canada of failing to curb the flow of fentanyl into the United States. The move, issued by executive order on Thursday night,

US President Donald Trump said Canada has to “pay a fair rate” in order to reach a trade agreement, as US talks with Canadian Prime Minister Mark Carney go down to the wire.