U.S.President Donald Trump has intensified criticism of Canada over wildfire smoke drifting across the border, threatening to raise import tariffs on Canadian goods.The president accused Canada of 'willful negligence' in forest management, claiming the pollution costs the U.S.billions annually.

Ontario Premier Doug Ford countered by urging American politicians to stop complaining and instead offer assistance, citing Canada's past support for U.S.disaster relief.Ford highlighted joint efforts with Canadian forces to rescue stranded campers in wildfires, while U.S.officials like Massachusetts Governor Maura Healey and Minnesota Gov.Tim Walz expressed willingness to help.Climate experts emphasized that wildfire challenges transcend borders, with both nations collaborating on firefighting resources.The dispute reflects broader tensions between the U.S.and Canada over environmental responsibilities and trade policies, as diplomatic channels remain open for dialogue.