To interpret and ensure proper application of the laws written by the legislative branch and enforced by the executive branch.
It's comes from the presidential powers.
State constitutions
Their powers are limited to the state in which they preside
Concurrent powers
Article III deals with the supreme courts powers.
They have the power to create new federal courts.
Yes, the legislature in Arizona determines the powers and jurisdiction of Justice of Peace Courts. These courts are established by state law, and their functions, including the types of cases they can hear and their procedural rules, are defined by Arizona statutes. Thus, any changes to their powers would require legislative action.
The special courts were created by Congress to hear certain cases involving the expressed powers of congress.
Courts and justice departments as well as the Supreme Court.
through the Maybury vs. Madison decision
Expressed Powers
The courts needed to be separated from both the legislative and executive powers.