In 2011 he returned to the FBI , serving as General Counsel under Mueller .
In 2005 Weissmann worked as special counsel under Mueller at the Federal Bureau of Investigation , then went into private practice at Jenner & Block in New York .
In 2011 Weissmann returned to the Federal Bureau of Investigation , serving as General Counsel under Mueller .
In 2005 Weissmann worked as special counsel under Mueller at the Federal Bureau of Investigation , then went into private practice at Jenner & Block in New York .