This document summarizes the potential risks to North American vehicle production from changes to trade policy under the Trump administration. It finds that Mexican production is expected to increase from 19% to 26% of total NAFTA production by 2020 due to investments. However, proposals like border taxes could impact existing vehicle sourcing and future production decisions. While some automakers have announced US investments, further shifts from Mexico and Canada to the US are possible. Any changes would disrupt supply chains and production capacity investments. The key will be automakers and suppliers developing contingency plans to reduce the impact of potential policy changes on their operations.