U.S. Cardinals (L-R) Roger Mahoney, Francis George, Donald Wuerl and Theodore McCarrick arrive for a meeting at the Synod Hall in the Vatican, March 5, 2013. Catholic cardinals in a closed-door meeting ahead of the election of a new pontiff want to be briefed on a secret report into leaks about alleged corruption and mismanagement in the Vatican, a senior source said on Monday. REUTERS/Stefano Rellandini (VATICAN - Tags: RELIGION)