[Footnote 1: See e.g., Farrand: "Records of the Federal Convention," Vol. I, pp. 138 et seq.; Vol. II, p. 298.] For one thing, the Court cannot deal with questions of a political character. The function of the Court is judicial only. Upon this ground it was decided that the question which of two rival governments in the State of Rhode Island was the legitimate one was for the determination of the political department of government rather than the courts;[1] that the question, whether the adoption by a state of the initiative and referendum violated the provision of the Federal Constitution guaranteeing to every state a republican form of government, was political and therefore beyond the jurisdiction of the Court.[2] In 1867 a sovereign state sought to enjoin the President of the United States from enforcing an act of Congress alleged to be unconstitutional. The Supreme Court, without determining the constitutionality of the act, declined to interfere with the exercise of the President's political discretion.[3] In the famous Dred Scott case[4] the effort of the Supreme Court to settle a political question accomplished nothing save to impair the influence and prestige of the Court. [Footnote 1: _Luther v. Borden_, 7 Howard, 1.] [Footnote 2: _Pacific Telephone Co. v. Oregon_, 223 U.S., 118.] [Footnote 3: _State of Mississippi v. Andrew Johnson_, 4 Wall., 475.] [Footnote 4: _Dred Scott v. Sandford_, 19 Howard, 393.] The power of the Court to declare legislative acts unconstitutional is subject to another important limitation. The judicial power is limited by the Constitution to actual cases and controversies between opposing parties. The Court cannot decide moot questions or act as an adviser for other departments of the government. A striking illustration is found in the so-called Muskrat case.[1] Congress having legislated concerning the distribution of property of the Cherokee Indians, and doubts having arisen as to the constitutional validity of the legislation, Congress passed another act empowering one David Muskrat and other Cherokee citizens to file suit, naming the United States as defendant, to settle the question. The Supreme Court declined to take jurisdiction and dismissed the suit, holding that it was not a case or controversy between opposing parties within the meaning of the Constitution. [Footnote 1: _Muskrat v. United States_, 219 U.S., 346.] Still another limitation is encountered in cases involving abuse of legislative power rather than lack of power. If Congress passes an act within one of the powers expressly conferred upon it by the Constitution, for example the power to lay taxes or the power to regulate interstate commerce, the Supreme Court cannot interfere though the incidental effect and ulterior purpose of the legislation may be to intrude upon the field of state power. We shall have occasion to refer to this limitation more than once in later chapters.