435 U.S. 151 98 S.Ct. 988 55 L.Ed.2d 179 Dixy Lee RAY, Governor of Washington, et al., Appellants,v.ATLANTIC RICHFIELD COMPANY and Seatrain Lines, I corporated. No. 76-930. Argued Oct. 31, 1977. Decided March 6, 1978. Syllabus Appellees challenge the constitutionality of the Washington Tanker Law, which regulates the design, size, and movement of oil tankers […]