US Presidency
1908

Forty or fifty separate state governments can not exercise that power over corporations doing business in most or all of them; first, because they absolutely lack the authority to deal with interstate business in any form; and second, because of the inevitable conflict of authority sure to arise in the effort to enforce different kinds of state regulation, often inconsistent with one another and sometimes oppressive in themselves. Such divided authority can not regulate commerce with wisdom and effect. The Central Government is the only power which, without oppression, can nevertheless thoroughly and adequately control and supervise the large corporations. To abandon the effort for National control means to abandon the effort for all adequate control and yet to render likely continual bursts of action by State legislatures, which can not achieve the purpose sought for, but which can do a great deal of damage to the corporation without conferring any real benefit on the public.