ADAM GADAHN. Mr. Gadahn is the most wanted American member of Al Qaeda and the first US citizen since the 1940s to be charged with treason. He is one of two Americans on the FBI’s list of 28 most-wanted terrorists, and the US is offering $1 million for information leading to his capture. Gadahn, born in Oregon and raised in California, was considered a senior commander under Osama bin Laden and said to play the role of 'translator, video producer, and cultural interpreter.' In this image from a video posted March 2010, Gadahn praised Nidal Malik Hasan, the US Army major charged with killing 13 people in Fort Hood, Texas, as a role model for other Muslims. He is still at large.