Mourners have begun arriving at the public wake for late NBC newsman TIM RUSSERT, which is taking place today at St. Albans School in Washington, D.C. PRESIDENT GEORGE W. BUSH and the first lady have arrived at the school, where Russert's son LUKE graduated in 2004. Luke, along with his mother and Tim's wife of 25 years, MAUREEN ORTH, greeted mourners, which included PHIL DONAHUE, ABC's GEORGE WILL, California First Lady MARIA SHRIVER and actress SUSAN SAINT JAMES. More details to come...