The Knight case was finally overthrown.
The vicious doctrine it embodied no longer remains as an obstacle to obstruct the pathway of justice when it assails monopoly.

Messrs.
Knox, Moody, and Bonaparte, who successively occupied the position of Attorney-General under me, were profound lawyers and fearless and able men; and they completely established the newer and more wholesome doctrine under which the Federal Government may now deal with monopolistic combinations and conspiracies.
The decisions rendered in these various cases brought under my direction constitute the entire authority upon which any action must rest that seeks through the exercise of national power to curb monopolistic control.

The men who organized and directed the Northern Securities Company were also the controlling forces in the Steel Corporation, which has since been prosecuted under the act.

The proceedings against the Sugar Trust for corruption in connection with the New York Custom House are sufficiently interesting to be considered separately.
From the standpoint of giving complete control to the National Government over big corporations engaged in inter-State business, it would be impossible to over-estimate the importance of the Northern Securities decision and of the decisions afterwards rendered in line with it in connection with the other trusts whose dissolution was ordered.

The success of the Northern Securities case definitely established the power of the Government to deal with all great corporations.