The Obama administration's National Labor Relations Board filed a complaint last month against Boeing to block production of the company's 787 Dreamliner at a new assembly plant in South Carolina—a "right to-work" state with a law against compulsory union membership. If the NLRB has its way, Dreamliner assembly will return to Washington, a union-shop state, along with more than 1,000 jobs.

The NLRB's action, which Boeing will challenge at a hearing next month, is a big deal....