Editing Adair v. United States (section)

===McKenna's dissent===
In his dissent, McKenna stressed the importance of the purpose of Congress' regulation, viz. its remedial efforts to counter the recurring clashes between workers and management in the railroad industry:

{{blockquote|The provisions of the act are explicit, and present a well coordinated plan for the settlement of disputes between carriers and their employees by bringing the disputes to arbitration and accommodation, and thereby prevent strikes and the public disorder and derangement of business that may be consequent upon them. I submit no worthier purpose can engage legislative attention or be the object of legislative action (...)}}

By the same token, McKenna argued that the invalidation of Section 10 would hamper Congress' intentions, as a scheme devised for effective arbitration would thus come to lack an integral component. In reference to the right of an employer to fire an employee at will, which would unravel Congress' arbitration scheme, McKenna asked:

{{blockquote|How can it be an aid, how can controversies which may seriously interrupt or threaten to interrupt the business of carriers (I paraphrase the words of the statute), be averted or composed if the carrier can bring on the conflict or prevent its amicable settlement by the exercise of mere whim and caprice?}}

In apparent admonition of the reasoning in the majority opinion, McKenna cautioned: "Liberty is an attractive theme, but the liberty which is exercised in sheer antipathy does not plead strongly for recognition." McKenna found that the legislation was within the boundaries of Congress' powers to regulate interstate commerce, and, in regard to the Fifth Amendment, a line was to be drawn between private and public business: "We are dealing with rights exercised in a quasi-public business, and therefore subject to control in the interest of the public."