Steven Greenhouse, Labor Board Tells Boeing New Factory Breaks Law, N.Y. Times, Apr. 21, 2011, at B1.
In its complaint, the labor board said that Boeing’s decision to transfer a second production line for its new 787 Dreamliner passenger plane to South Carolina was motivated by an unlawful desire to retaliate against union workers for their past strikes in Washington and to discourage future strikes. The agency’s acting general counsel, Lafe Solomon, said it was illegal for companies to take actions in retaliation against workers for exercising the right to strike.
Although manufacturers have long moved plants to nonunion states, the board noted that Boeing officials had, in internal documents and news interviews, specifically cited the strikes and potential future strikes as a reason for their 2009 decision to expand in South Carolina.

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Steven Greenhouse, House Is Expected To Pass Bill Aiding New Boeing Plant, N.Y. Times, Sept. 15, 2011, at B1:
Leading House Republicans on Thursday will take up the contentious debate over the National Labor Relations Board’s efforts to block Boeing from operating a $750 million aircraft assembly line in South Carolina instead of Washington State.
The Republican-controlled House is expected to approve an unusual bill that would bar the labor board from pursuing the board’s pending action against Boeing, which Republicans have been denouncing day after day.
… The Republican bill, called “The Protecting Jobs from Government Interference Act,” would prohibit the labor board from “ordering any employer to close, relocate or transfer employment under any circumstances.”