In what ways is the Supreme Court of the United States unique compared to other nations?

Question

In what ways is the Supreme Court of the United States unique compared to other nations?

Answer 1

the court members are placed there for a lifetime, and they spew rulings on cases in their interpretation of the law

Answer 2

The large degree of independence.  In other nations, the highest judiciary is part of the legislature (The Law Lords in Great Britain) or they are under the Executive Branch.