Branches of Government

We have three branches the Executive branch,legislative branch,and the judical branch.The Executive Branch is controlled by the President of the United States.The President is responsible for implementing and enforcing the laws written by Congress.The Vice President is also part of the Executive Branch, ready to assume the Presidency should the need arise.Created by Article I of the Constitution, the Legislative Branch includes the House of Representatives and the Senate, which together form the United States Congress. The Constitution gurantees Congress the only authority to enact legislation and declare war, the right to confirm or reject many Presidential appointments,and investigative powers.When the Executive and Legislative branches are elected by the people, members of the Judicial Branch are appointed by the President and confirmed by the Senate.

Article III of the Constitution, which establishes the Judicial Branch, leaves the Congress to determine the structure of the federal judiciary. Even the number of Supreme Court Justices is left to Congress-usually there have been as few as six, while the current number (nine, with one Chief Justice and eight Associate Justices) has only been in place since 1869. The Constitution also grants Congress the power to establish courts lower to the Supreme Court, and Congress has established the United States district courts, which try most federal cases, and 13 United States courts of appeals, which review appealed district court cases.
Incase you didnt know what constitutional means it means:

Consistent with, sanctioned by, or permissible according to a constitution:

a law that was declared constitutional by the court; the constitutional right of free speech