WASHINGTON (CNN) -- A retired federal judge is a leading candidate to replace Attorney General Alberto Gonzales, whose last day on the job was Friday, two sources familiar with the search for a successor told CNN on Saturday... Ironically, nominating Mukasey could cause Bush trouble from the conservative right.In 2005, the liberal group Alliance for Justice listed Mukasey among those it considered "consensus" choices for possible Bush Supreme Court picks. In 2003, liberal Democratic Sen. Chuck Schumer of New York, a leading liberal voice on judicial nominations, listed Mukasey as an acceptable Supreme Court choice in a letter he sent...