During the Korean War, laborers from The Youngstown Sheet & Tube Company went on strike. Fearing that a steel strike would cripple the USA's efforts in North Korea, President Truman "seized" the assets of steel companies to assure the production of steel. The owners of the steel companies, led by The Youngstown Sheet & Tube Company, sued then Commerce Secretary Charles Sawyer to declare the seizure unlawful. President Truman argued he had the "executive power" to take the assets under war time authority, but the US Supreme Court didn't see it that way. The opinions set forth in the case, and corresponding limitations of Presidential power, have become the golden standard for what the President is and is not allowed to do. The case is known as The Steel Seizure Case or simply The Youngstown Steel Case.