The decision in Brown _v._ Maryland, but more especially the "original package doctrine" there laid down, has been sometimes criticised as going too far. It would have been sufficient, the critics contend, for the Court to have held the Maryland act void on account of its obviously discriminatory character; and they urge that original packages receiving the protection of the State ought to be subject to nondiscriminatory taxation by it. The criticism was partially anticipated by Marshall himself in the apprehensions which he voiced that any concession to "the great importing States" might be turned by them against the rest of the country. Indeed, he is uncertain whether the original package doctrine will prove sufficient for its purposes and accordingly offers it not as a rule "universal in its application," but rather as a stop-gap principle. History has proved, however, that in this he builded better than he knew. For in the field of foreign commerce the original package doctrine has never been disturbed, and it has scarcely been added to; and so confined, it has never been surpassed by any later piece of judicial legislation, whether in point of durability or in that of definiteness and easy comprehensibility.[536]
State Taxation of the Subject Matter of Interstate Commerce
The task of drawing the line between State power and the commercial interest has proved a comparatively simple one in the field of foreign commerce, the two things being in great part territorially distinct. With "commerce among the States" it is very different. This is conducted in the interior of the country, by persons and corporations that are ordinarily engaged also in local business; its usual incidents are acts which, if unconnected with commerce among the States, would fall within the State's powers of police and taxation; while the things it deals in and the instruments by which it is carried on comprise the most ordinary subject matter of State power. In this field the Court has, consequently, been unable to rely upon sweeping solutions. To the contrary, its judgments have often been fluctuating and tentative, even contradictory; and this is particularly the case as respects the infringement of the State taxing power on interstate commerce. In the words of Justice Frankfurter: "The power of the States to tax and the limitations upon that power imposed by the Commerce Clause have necessitated a long, continuous process of judicial adjustment. The need for such adjustment is inherent in a Federal Government like ours, where the same transaction has aspects that may concern the interests and involve the authority of both the central government and the constituent States. The history of this problem is spread over hundreds of volumes of our Reports. To attempt to harmonize all that has been said in the past would neither clarify what has gone before nor guide the future. Suffice it to say that especially in this field opinions must be read in the setting of the particular cases and as the product of preoccupation with their special facts."[537]