The equitable jurisdiction of the courts of the United States enables them to interfere in disputes arising out of State elections in certain cases in which the claim is set up that rights held under the Constitution or laws of the United States have been violated. Actions for such relief are rare, and instances have occurred in which the remedy has been abused for political purposes.[Footnote: See the proceedings in the case of Kellogg _v._ Warmoth in the United States Circuit Court in Louisiana in 1872. McPherson's "History of Reconstruction," 100-108.] The centralizing and nationalizing tendencies which set in early in the nineteenth century and were so greatly strengthened by the course of events during and following soon after the Civil War have greatly weakened the position and influence of the State courts. They have thus rendered the State bench less attractive. In 1791, John Rutledge, an associate justice of the Supreme Court of the United States, resigned that office for the Chief Justiceship of South Carolina. During the last half century, several Chief Justices of States have resigned to become Associate Justices of the Supreme Court of the United States. Associate Justices of Supreme Courts in the smaller States have also frequently resigned to accept the position of District Judge, attracted by the life tenure, larger salary, and retiring pension. * * * * * CHAPTER XI RELATIONS BETWEEN THE COURTS OF DIFFERENT STATES Every State has all the rights of an independent sovereign, except so far as its sovereignty is limited by the Constitution of the United States. As respects each other the States are for most purposes in the position of foreign governments. The courts of one are regarded by those of any other as foreign courts, except so far as the Constitution may have prescribed a different rule. No legal process from a court can have any inherent force outside of the territorial boundaries of the government in which it is issued. The law of that government may attach certain consequences to the fact of its service in a foreign country, but it can do so only with reference to the effect of the proceeding on persons or property subject to its own jurisdiction. Courts, as a general rule, can act only when they have jurisdiction over the person, the subject-matter, and the cause.