Federal Power Commission v. Natural Gas Pipeline Company of America

[Syllabus from pages 575-577 intentionally omitted]

Messrs. George I. Haight, of Chicago, Ill., S. A. L. Morgan, of Amarillo, Tex., and J. J. Hedrick, of Chicago, Ill., for Natural Gas Pipeline Co. et al.

Messrs. Francis Biddle, Atty. Gen., Charles Fahy, Sol. Gen., and Richard H. Demuth, of Washington, D.C., for Federal Power Commission.

Mr. Albert E. Hallett, Jr., of Chicago, Ill., for Illinois Commerce Commission.

Mr. Chief Justice STONE delivered the opinion of the Court.