Constables in the United States
While Constables primarily serve the Courts, they belong to the executive branch of government.
State governments of the United States
The judicial branch in most states has a court of last resort usually called a supreme court that hears appeals from lower state courts. New York's highest court is called the Court of Appeals, while its trial court is known as the Supreme Court. Maryland also calls its highest court the Court of Appeals. Texas and Oklahoma each separate courts of last resort for civil and criminal appeals. Each state's court has the last word on issues of state law and can only be overruled by federal courts on issues of Constitutional law.