By Steven Greenhouse/The New York Times
A top official with the National Labor Relations Board announced on Friday that the agency was dropping its politically charged case against Boeing, in which the agency had accused the company of violating federal labor law by opening a new aircraft production plant in South Carolina.
The N.L.R.B.’s acting general counsel, Lafe Solomon, said the labor board had decided to end the case after the machinists’ union — which originally asked for the case to be brought — urged the board on Thursday to withdraw it.