From Roosevelt’s 1907 State of the Union Message (quoting an earlier speech):

The makers of our National Constitution provided especially that the regulation of interstate commerce should come within the sphere of the General Government. The arguments in favor of their taking this stand were even then overwhelming. But they are far stronger to-day, in view of the enormous development of great business agencies, usually corporate in form. Experience has shown conclusively that it is useless to try to get any adequate regulation and supervision of these great corporations by State action. Such regulation and supervision can only be effectively exercised by a sovereign whose jurisdiction is coextensive with the field of work of the corporations–that is, by the National Government.

If you update the last sentence, it reads pretty well.