FILE - In this May 28, 2010, file photo, Rep. Darrell Issa, R-Calif., gives an interview on Capitol Hill in Washington. Isaa said Sunday, Oct. 9, 2011, that he could send subpoenas to the Obama administration as soon as this week over weapons lost amid the Mexican drug war. Isaa suggested on "Fox News Sunday" that Attorney General Eric Holder knew about the gun trafficking operation known as "Fast and Furious" earlier than he has acknowledged. (AP Photo/Alex Brandon, File)
Pinal County Sheriff Paul Babeu speaks as, from left, Cochise County Sheriff Larry Dever, Yavapai County Sheriff Scott Mascher, and LaPaz County Sheriff Don Lowrey listen during a press conference in front of the Arizona Peace Officers memorial Friday, Oct. 7, 2011 in Phoenix to discuss "Operation Fast and Furious". The gathering was to announce that Ten Arizona Sheriffs demand a Special Counsel to Investigate Attorney General Eric Holder and the Department of Justice for their roles in “Operation Fast & Furious”.