Updated 3:20 p.m. | General Motors’ decision to halt production in two states that were key to Donald Trump’s 2016 victory could complicate the president’s re-election bid.

The U.S. automobile manufacturer announced Monday it plans to cease work on the Chevrolet Cruze at a Lordstown, Ohio, plant and on three Chevy, Buick and Cadillac models at a Detroit-Hamtramck facility in Michigan. The company said those moves, along with another at a Canada-based factory, are aimed at cutting costs.

The White House did not comment on GM’s plans for several hours. The president himself broke that silence in the afternoon as he departed the White House for campaign rallies in Mississippi.

“We don’t like it. We believe they’ll be opening something else,” Trump said of General Motors. “We have a lot of pressure on them.”

He did not provide specifics, however, on just what vehicles the company might make at those plants or partially make.