The newest justice on the U.S. Supreme Court gets last choice of the 13 Circuit Justice spots. 

Today the Court assigned Associate Justice Sonia Sotomayor to ride herd over the Tenth Circuit, which covers Colorado, Kansas, New Mexico, Oklahoma, Utah, and Wyoming.

Former Associate Justice David Souter's spots went to Associate Justices Stephen Breyer (First Circuit) and Samuel A. Alito, Jr. (Third Circuit).