Efforts by the United States and Mexico to reach a tariff agreement have stalled, raising fresh uncertainty for North American manufacturers, automobile companies and steel producers.

According to Reuters, negotiations had made progress toward reducing U.S. tariffs on Mexican automobiles, steel and aluminum in exchange for concessions from Mexico. However, disagreements over the scale of potential tariff reductions have slowed the discussions.

U.S. Commerce Secretary Howard Lutnick reportedly opposes significant cuts to the existing 25% tariff on Mexican automobiles and 50% tariffs on steel and aluminum. Negotiations remain ongoing, and officials have not announced a final agreement.

The dispute matters to businesses that rely on cross-border supply chains. Automobile manufacturers, metal producers and industrial suppliers could face continued cost uncertainty while companies assess sourcing, production and pricing decisions.

A prolonged tariff standoff could complicate investment planning for companies operating across the U.S.-Mexico border. Businesses may also need to account for changing import costs when negotiating supplier contracts and setting future prices.

Mexico's trade officials have indicated that progress has been made in the discussions. For now, however, the absence of a confirmed deal leaves companies waiting for greater clarity on the future of North American trade.