delivered the opinion of the Court.
The petitioner, a national banking association organized under the National Bank Act, with its principal office in the City of New York, brought suit in the federal district court for the southern district of New York against Andrew B. Keating, receiver, and William Reid, Jr., collector of taxes of the City of New York, to enjoin thenxfrom collecting taxes assessed against shares in the association in pursuance of a state law but by, and for the sole use of, the city. The prayer for relief rested upon the contention that the provisions of the state law, which fixed the rate of tax, discriminated in favor of other, moneyed capital in the hands of individual citizens of the state, in contravention of § 5219 Rev. Stats., and of provisions of the Constitution of the United States. A statutory court of three’ judges was constituted under § 266 of the Judicial Code (U. S. Code, Title 28, § 380), and a master appointed, by whom evidence was taken and *103 reported. When the case came on for final hearing, the court, of its own motion, dissolved after directing that the cause proceed before a single district judge upon the ground that the suit was not one coming within the terms of § 266. Petitioner applied to this Court for a writ of mandamus requiring the judges composing the statutory-court to reconvene and proceed.to a determination of the case. Upon filing the petition, a rule to show cause was issued, upon a return to which the application has been heard.
The statutory court held that § 266 did not apply because neither of the defendants was an officer of the state and the suit involved only the action of city officials in the collection of taxes for the use of the city. In support of this ruling,
Ex parte Collins,
Section 266 provides-that no injunction “restraining the enforcement ... of any. statute of a State by restraining the action of any officer of such State in the enforcement ... of such statute . . . shall be issued or granted . . . upon the ground of the unconstitutionally of such statute ” except upon a hearing and determina *104 tion of a court composed of three judges. The suit here involved the constitutionality of a state statute, but it was not brought to restrain “the action of any officer of such State in the enforcement ” thereof. The persons sued are municipal officers, having no state functions to perform, but charged only with the duty of collecting and receiving taxes assessed by other city officials in no respect for the use of the state but for and in behalf of the city alone. In effect, the contention for petitioner practically comes to this — that the general purpose of § 266 being to safeguard state legislation assailed as unconstitutional from the improvident action of federal courts, the words “ by restraining the action of any officer of such State in the enforcement . . of such statute” are without significance. In other words, we are asked to ignore the quoted words and read the section as though they were not there.
But we are not at liberty thus to deny effect to a part of a statute.' No rule of statutory construction has been more definitely stated or more often repeated than the cardinal rule that “significance and effect shall, if possible, be accorded to every word. As early as in Bacon’s Abridgment, sect. 2, it was said that ‘ a statute ought, upon the whole, to be so construed that, if it can be prevented, no clause, sentence, or word shall be superfluous, void, or insignificant.’ ”
Market Co.
v.
Hoffman,
Our attention is directed to several cases disposed of under § 266, where this Court passed on the merits .although the suits were against local officers. We do not stop to inquire whether, at least in some of these cases, the so-called local officers in fact represented the state or exercised state functions in the matters involved and properly might be held to come within the provision of § 266 now under review. Compare, for example,
People ex rel. Plancon
v.
Prendergast,
Rule discharged.
