Sonia Sotomayor, 54, will be taking over from Justice David Souter who gave details of his plans to retire earlier on this month.
It is expected that President Obama will announce his nominee later. Before being able to take the post Sotomayor will need to be vetted by the Senate committee. The position will then need to be confirmed by a vote in the Senate.
If the nomination gets given the go ahead then Sonia Sotomayor will be the second woman to be working for the Supreme Court alongside Justice Ruth Bader Ginsburg.
Sonia Sotomayor grew up in the Bronx and lived in a house estate It is reported she became inspired to become a judge after watching Perry Mason. She was educated at Yale and Princeton.
Back in 1991 she was named as a district judge by George Bush and President Bill Clinton choose her for the circuit court in 1997.
The Supreme Court is the most powerful in the United States and can eliminate state or federal laws if they are considered
unconstitutional.