WASHINGTON (AP) - The FBI has banned its employees from taking any items from crime scenes or evidence sites after Justice Department investigators found that 13 agents took debris from the rubble of the World Trade Center. ... Sen. Charles Grassley, R-Iowa, said in a letter Thursday to FBI Director Robert Mueller that there appears to be a double standard for agents because private citizens have been prosecuted and given prison sentences for taking items from the site. http://apnews.myway.com/article/20040226/D80V2MP80.html