THERE MAY NEVER be a better spokesman for closing the gun show loophole than Adam Yahiye Gadahn. A 32-year-old American and convert to Islam, Mr. Gadahn referred to the terrorist attacks of Sept. 11, 2001, as "blessed raids" and called for additional "jihad against America." He has been on the FBI's Most Wanted Terrorists list and faces criminal charges for treason and for providing material support to al-Qaeda. Mr. Gadahn is believed to have left his native Orange... (GunPolicy.org)