From 1994 until 1995, Chang served as a
law clerk for Judge
James L. Ryan of the
United States Court of Appeals for the Sixth Circuit. From 1997 to 1999, Chang served as an
associate at the
Chicago headquarters office of the global law firm
Sidley Austin. On December 18, 2010, the United States Senate confirmed Chang by
unanimous consent. He received his commission on December 20, 2010. == See also ==