Trump's proposed 50% tariffs on Canadian imports have sparked legal concerns, according to a law professor. Ilya Somin from George Mason University argues that the tariffs may violate international trade laws, potentially leading to a court challenge. The measure, part of Trump's broader trade policy, aims to pressure Canada over trade disputes. However, legal experts warn that such high tariffs could breach World Trade Organization rules. The policy has already strained relations between the two nations. Canadian tourists and businesses are also feeling the impact, with spending in the US down 15.1% as tensions rise. Some US states are now offering incentives to attract Canadian visitors back. The situation highlights the growing economic and diplomatic friction between the US and its northern neighbor.