Expansion talks at Volkswagen's lone U.S. plant have ground to a halt amid disagreements about the role of organized labor at the Tennessee factory.
An acrimonious vote at the Chattanooga plant in February was a narrow defeat for the United Auto Workers union.
Since then, the union has challenged the outcome of the vote with the National Labor Relations Board; a top labor representative on Volkswagen's supervisory board has denounced the actions of U.S. Sen. Bob Corker and Gov. Bill Haslam; and the governor has suggested the state has been unable to negotiate incentives with a VW official with final decision-making power.
State incentives for expanding the plant would have to be approved by the state Legislature, which is preparing to adjourn for the year in the next few weeks.
The National Labor Relations Board is expected to discuss the issue later this month.