United States Judicial branch
highest courts: US Supreme Court (consists of 9 justices - the chief justice and 8 associate justices)
judge selection and term of office: president nominates and, with the advice and consent of the Senate, appoints Supreme Court justices; justices serve for life
subordinate courts: Courts of Appeal (includes the US Court of Appeal for the Federal District and 12 regional appeals courts); 94 federal district courts in 50 states and territories
note: the US court system consists of the federal court system and the state court systems; although each court system is responsible for hearing certain types of cases, neither is completely independent of the other, and the systems often interact
Definition: This entry includes three subfields. The highest court(s) subfield includes the name(s) of a country's highest level court(s), the number and titles of the judges, and the types of cases heard by the court, which commonly are based on civil, criminal, administrative, and constitutional law. A number of countries have separate constitutional courts. The judge selection and term of office subfield includes the organizations and associated officials responsible for nominating and appointing judges, and a brief description of the process. The selection process can be indicative of the independence of a country's court system from other branches of its government. Also included in this subfield are judges' tenures, which can range from a few years, to a specified retirement age, to lifelong appointments. The subordinate courts subfield lists the courts lower in the hierarchy of a country's court system. A few countries with federal-style governments, such as Brazil, Canada, and the US, in addition to their federal court, have separate state- or province-level court systems, though generally the two systems interact.
Source: CIA World Factbook