The first significant extension of the doctrine of the immunity of federal instrumentalities from State taxation came in Weston v. Charleston,[47] where Chief Justice Marshall also found in the supremacy clause a bar to State taxation of obligations of the United States. During the Civil War, when Congress authorized the issuance of legal tender notes, it explicitly declared that such notes, as well as United States bonds and other securities, should be exempt from State taxation.[48] A modified version of this section remains on the statute books today.[49] The right of Congress to exempt legal tender notes to the same extent as bonds was sustained in People v. Board of Supervisors[50] over the objection that such notes circulated as money and should be taxable in the same way as coin. But a State tax on checks issued by the Treasurer of the United States for interest accrued upon government bonds was sustained since it did not in any wise affect the credit of the National Government.[51] Similarly, the assessment for an ad valorem property tax of an open account for money due under a federal contract,[52] and the inclusion of the value of United States bonds owned by a decedent, in measuring an inheritance tax,[53] were held valid, since neither tax would substantially embarrass the power of the United States to secure credit.
Income from federal securities is also beyond the reach of the State taxing power as the cases now stand.[54] Nor can such a tax be imposed indirectly upon the stockholders on such part of the corporate dividends as corresponds to the part of the corporation's income which is not assessed, i.e., income from tax exempt bonds.[55] A State may constitutionally levy an excise tax on corporations for the privilege of doing business, and measure the tax by the property or net income of the corporation, including tax exempt United States securities or the income derived therefrom.[56] The designation of a tax is not controlling.[57] Where a so-called "license tax" upon insurance companies, measured by gross income, including interest on government bonds, was, in effect, a commutation tax levied in lieu of other taxation upon the personal property of the taxpayer, it was still held to amount to an unconstitutional tax on the bonds themselves.[58]
TAXATION OF GOVERNMENT CONTRACTORS
In the course of his opinion in Osborn v. Bank of the United States,[59] Chief Justice Marshall posed the question: "Can a contractor for supplying a military post with provisions, be restrained from making purchases within any state, or from transporting the provisions to the place at which the troops were stationed? or could he be fined or taxed for doing so? We have not yet heard these questions answered in the affirmative."[60] One hundred and thirteen years later, the Court did answer the last part of his inquiry in the affirmative. In James v. Dravo Contracting Company[61] it held that a State may impose an occupation tax upon an independent contractor, measured by his gross receipts under contracts with the United States. Previously it had sustained a gross receipts tax levied in lieu of a property tax upon the operator of an automobile stage line, who was engaged in carrying the mails as an independent contractor,[62] and an excise tax on gasoline sold to a contractor with the Federal Government and used to operate machinery in the construction of levees in the Mississippi River.[63] Subsequently it has approved State taxes on the net income of a government contractor,[64] income[65] and social security[66] taxes on the operators of bath houses maintained in a National Park under a lease from the United States; sales and use taxes on sales of beverages by a concessionaire in a National Park,[67] and on purchases of materials used by a contractor in the performance of a cost-plus contract with the United States,[68] and a severance tax imposed on a contractor who severed and purchased timber from lands owned by the United States.[69]
STATUS OF DOCTRINE TODAY
Of a piece with James v. Dravo Contracting Co. was the decision in Graves v. O'Keefe,[70] handed down two years later. Repudiating the theory "that a tax on income is legally or economically a tax on its source," the Court held that a State could levy a nondiscriminatory income tax upon the salary of an employee of a government corporation. In the opinion of the Court, Justice Stone intimated that Congress could not validly confer such an immunity upon federal employees. He wrote: "The burden, so far as it can be said to exist or to affect the government in any indirect or incidental way, is one which the Constitution presupposes; and hence it cannot rightly be deemed to be within an implied restriction upon the taxing power of the national and state governments which the Constitution has expressly granted to one and has confirmed to the other. The immunity is not one to be implied from the Constitution, because if allowed it would impose to an inadmissible extent a restriction on the taxing power which the Constitution has reserved to the state governments."[71] Chief Justice Hughes concurred in the result without opinion. Justices Butler and McReynolds dissented and Justice Frankfurter wrote a concurring opinion in which he reserved judgment as to "whether Congress may, by express legislation, relieve its functionaries from their civic obligations to pay for the benefits of the State governments under which they live...."[72]
AD VALOREM TAXES UNDER THE DOCTRINE
Property owned by a federally chartered corporation engaged in private business is subject to State and local ad valorem taxes. This was conceded in McCulloch v. Maryland,[73] and confirmed a half century later with respect to railroads incorporated by Congress.[74] Similarly, a property tax may be levied against the lands under water which are owned by a person holding a license under the Federal Water Power Act.[75] Land conveyed by the United States to a corporation for dry dock purposes was subject to a general property tax, despite a reservation in the conveyance of a right to free use of the dry dock and a provision for forfeiture in case of the continued unfitness of the dry dock for use, or the use of the land for other purposes.[76] Where equitable title has passed to the purchaser of land from the Government, a State may tax the equitable owner on the full value thereof, despite the retention of legal title by the Government,[77] but the equitable title passes otherwise.[78] Recently a divided Court held that where the Government purchased movable machinery and leased it to a private contractor, the lessee could not be taxed on the full value of the equipment.[79] In the pioneer case of Van Brocklin v. Tennessee,[80] the State was denied the right to sell for taxes lands which the United States owned at the time the taxes were levied, but in which it had ceased to have any interest at the time of sale. Nor can a State assess land in the hands of private owners for benefits from a road improvement completed while it was owned by the United States.[81]
PUBLIC PROPERTY AND FUNCTIONS