The Court set the matter for oral argument on May 12, 1952, less than ten days later. The government's brief opened with an attack on Judge Pine's application of equitable principles to the facts before him but devoted much of its 175 pages to the historical records of governmental seizure of private property in wartime from the Revolutionary War and the
War of 1812 to
Abraham Lincoln's Emancipation Proclamation and seizure of telegraph and railroad lines to the government's seizure of industrial properties in the
First and the
Second World Wars. The steel industry's brief focused instead on the lack of statutory authority for this seizure and emphasized Congress's decision, when it had enacted the Taft–Hartley Act, to give the President the power to seek an injunction against strikes that might affect the national economy instead. It denied that the President had any power to seize private property without express legislative authorization and noted that Truman himself had asked for such legislative authority when the
United Mine Workers of America went out on strike in 1950. The Court set aside five hours for oral argument and allowed the Steelworkers and the railroad unions to speak as
amicus curiae. Before an overflow crowd,
John W. Davis argued for the steel companies that the President had no powers to make laws or, more particularly, to seize property without Congressional authorization. He explained away his own actions when he had defended the government's seizure of property while he had been
US Solicitor General in
Woodrow Wilson's administration and urged the justices to look beyond the transitory labor dispute before them to the constitutional principles at stake, closing with
Thomas Jefferson's words, slightly misquoted: "In questions of power let no more be said of confidence in man but bind him down from mischief by the chains of the Constitution". Justice
Frankfurter was the only Justice to interrupt Davis, with only one question, during his argument. Solicitor General
Philip B. Perlman had a rockier argument, as the Justices pressed him with questions on many of the points he made. Justice
Jackson took pains to distinguish the facts concerning the seizure of the North American Aviation Company in 1941, which he had overseen as
Attorney General at the time. Justice
Douglas commented that if Perlman were correct as to the scope of the President's powers, there was no need for Congress. When Perlman attempted to close on a rousing note, reminding the Justices that it was during wartime, Justices Jackson and Frankfurter immediately contradicted him by noting that Congress had not declared war. Goldberg, speaking for the Steelworkers, addressed whether the Taft–Hartley Act would have allowed for injunctive relief in those circumstances. The attorneys for the railroad brotherhoods, which were parties to a similar action coming up for review, addressed the President's inherent powers. Davis then gave his rebuttal by using only a few minutes of the hour that he had reserved. Even despite the Court's evident lack of sympathy for the broad claims of inherent power made by the government, Truman and many other observers expected the Court to uphold his authority to act in the absence of express statutory authorization. Many commentators predicted that the Court would avoid the constitutional question, but others stressed the background that all of the Justices had in the
New Deal and
Fair Deal, when the powers of the Presidency had expanded greatly, and the past support of Justices such as
Black,
Reed, Frankfurter, and Douglas for the expansive application of the President's war powers. As it turns out, most of those predictions were wrong. While Justice
Burton harbored fears at one point that he might be the only Justice to vote against the government's position, he was encouraged by his private conversations with other Justices. In the end, the Court voted 6–3 to affirm the District Court's injunction to bar the President from seizing the steel plants. ==Majority opinion==