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
Separate from, but not entirely independent of, this federal court system are the court systems of each state, each dealing with, in addition to federal law when not deemed preempted, a state's own laws, and having its own court rules and procedures. Although state governments and the federal government are legally "dual sovereigns", the Supreme Court of the United States is in many cases the appellate court from the State Supreme Courts (e.g., absent the Court countenancing the applicability of the "doctrine of adequate and independent State grounds"). The Supreme Courts of each state are by this doctrine the final authority on the interpretation of the applicable state's laws and Constitution. Many state constitution provisions are equal in breadth to those of the U.S. Constitution, but are considered "parallel" (thus, where, for example, the right to privacy pursuant to a state constitution is broader than the federal right to privacy, and the asserted ground is explicitly held to be "independent", the question can be finally decided in a State Supreme Court—the U.S. Supreme Court will decline to take jurisdiction).