The U.S. House is set to pass a bill Thursday targeting President Barack Obama's labor board.
The bill would prohibit the National Labor Relations Board from telling businesses where they can build their plants, thereby undermining the government's lawsuit against Boeing Co.
Boeing opened a new plant in South Carolina, a right-to-work state.
The suit claims Boeing punished union workers by not creating those jobs at its plant in Washington state.
But Boeing said it opened the production line for its 787 airplane in South Carolina for valid economic reasons.
The bill is not expected to pass the Senate, where Democrats will try to foil its even coming to a vote.