The Landmark Supreme Court Case National Labor Relations Board V

The landmark Supreme Court case National Labor Relations Board v.Jones & Laughlin Steel Corporation was significant because it

A) freed the slaves.
B) affirmed a federal role in regulating the national economy.
C) clarified the president's role as a mediator in major labor disputes.
D) established the bounds of executive privilege.
E) delegated unprecedented amounts of discretionary authority to executive agencies.