Battery companies are slowing construction or reconsidering big investments in the United States because of tariffs on China and the proposed rollback of tax credits.

Battery manufacturing began to take off in the United States in recent years after Congress and the Biden administration offered the industry generous incentives.

But that boom now appears to be stalling as the Trump administration and Republican lawmakers try to restrict China’s access to the American market.

From South Carolina to Washington State, companies are slowing construction or reconsidering big investments in factories for producing rechargeable batteries and the ingredients needed to make them.

A big reason for that is higher trade barriers between the United States and China are fracturing relationships between suppliers and customers in the two countries. At the same time, Republicans are seeking to block battery makers with ties to China, as well as those that rely on any Chinese technology or materials, from