President Barack Obama has another important item on his "to-do list." He must find and nominate a new Supreme Court Justice.

On Friday, Supreme Court Justice John Paul Stevens announced that he is retiring. Justice Stevens, who will turn 90 on April 20, is the longest-serving member of the current Supreme Court.

The United States Supreme Court is the highest court in the nation. Nominating members of the Supreme Court is one of the most important responsibilities of a President. When Supreme Court Justices are appointed, they can remain on the Court for the rest of their lives. They decide for themselves how long they stay.

The Supreme Court is the head of the judicial branch of the U.S. government. It checks the powers of Congress and the President. The Court does this by hearing cases challenging laws passed by Congress and signed by the President. The Court also hears challenges to laws passed on the state level, and has the right to overturn any law that it considers unconstitutional.

This is an incredible responsibility that President Obama has. It will take a lot of thought and time to pick just the right judge for the job. Tell me what you think President Obama needs to think about when picking a new Supreme Court Justice.  What qualities does this person need to have?  Why is this such an important task?  If you could choose anyone, who would you choose?  Tell me your thoughts!