Government of Massachusetts
The judiciary of Massachusetts is the branch of the government that interprets and applies the law of Massachusetts, ensures equal justice under law, and provides a mechanism for dispute resolution. The Massachusetts court system consists of the Supreme Judicial Court, the Appeals Court, and the seven Trial Court departments:The judicial power in Massachusetts is reposed in the Supreme Judicial Court, which superintends the entire system of courts. In addition to appellate functions, the Supreme Judicial Court is responsible for the general superintendence of the judiciary and of the bar, makes or approves rules for the operations of all the courts, and in certain instances, provides advisory opinions, upon request, to the Governor and Legislature on various legal issues. The Supreme Judicial Court also oversees several affiliated agencies of the judicial branch, including the Board of Bar Overseers, the Board of Bar Examiners, the Clients' Security Board, the Massachusetts Mental Health Legal Advisors Committee, and Massachusetts Correctional Legal Services.
Federal government of the United States
One of the theoretical pillars of the U.S. Constitution is the idea of "checks and balances" among the powers and responsibilities of the three branches of American government: the executive, the legislative, and the judiciary. For example, while the legislative branch (Congress) has the power to create law, the executive branch under the president can veto any legislation—an act which, in turn, can be overridden by Congress. The president nominates judges to the nation's highest judiciary authority, the Supreme Court, but those nominees must be approved by Congress. The Supreme Court, in turn, can invalidate unconstitutional laws passed by the Congress. These and other examples are examined in more detail in the text below.