Attorney General Eric Holder condemned the deadly shooting of federal judge John Roll on Saturday, promising that the Justice Department would assist the FBI in investigating the attack in Tucson, Ariz. “I want to assure the people of Arizona and every American that we will hold accountable anyone responsible for these heinous acts,” Holder said in a statement. Here’s Holder’s full statement: “Today’s tragedy in Arizona was a senseless act of violence that has already resulted in devastating loss, including the death of Chief United States District Court Judge John Roll and four other individuals and the wounding of Representative...