A 2024 US International Trade Commission report by David Riker of the effects on imports of 25% US tariff shows a 75% reduction in imports and a 5% increase in US prices. It would lead to large new investments in the US auto industry in different states. Hyundai recently announced a $21 billion investment plan in the US and building of a steel plant in Louisiana. General Motors will increase investments in the US and expand production. Other Japanese companies will make large investments for a presence in the US market.
"A new 25% tariff on U.S. imports from outside of North America would reduce vehicle imports by 73.9%, increase average prices of vehicles in the United States by 5.0%, and increase variable profits from domestic production by 5.2%." David Riker, USITC