Judicial branch is one of the three branches of Government. The members of this branch are not elected by people like other two branches which are executive branch and legislative branch. President appoints the members of this branch after the confirmation from senate. Congress has the full authority to decide the formation of federal judiciary according to Constitution Article III. The numbers of judicial branch supreme court justices are also decided by Congress. Constitution has also permitted Congress to establish courts that are lower than Supreme Court. District courts are the lowest courts at 3^rd position, above it are appellate courts at 2^nd, and Supreme Court at first position. The term of the judges of courts are not fixed and judges can only be removed by House of Representatives and Senate approval.

Judicial branch supreme court consists of nine justices. One justice is a chief justice and other associate justices. Supreme Court is the top most court of judiciary where appeals can be filed. Before 1869, there were only six judges in the Supreme Court. Judges are appointed for life time term which keeps the judges away from politics of reelection and fair justices will be given by those judges. Judges retain their position until their death, or they resign or removed by Congress. As Supreme Court is the highest court, decisions made by this court cannot be appealed anywhere else. Mainly the work of this court is to try out the appeals, but it may also review the decisions made by inferior courts. Some cases can only be solved in Supreme Court like cases between states, diplomats and ambassadors.

If the appellant is not satisfied with the decision made by state courts, a written petition can be filed in judicial branch supreme court to review the case again. But it is not compulsory that Supreme Court agrees to do so. There are certain situations which are looked upon by Supreme Court to review the decisions of lower courts. The constitution has also given rights to the accused of any crime to ask for decision's review in higher courts, a person can also get punishment twice for same crime. Supreme Court usually handles very few cases every year and even Congress cannot challenge the judgment given in the dispute of two states.