CBS News reported here at 2:36 pm on the president's remarks made today after the lunch hour:
Mr. Obama noted that S and P attributed its downgrade in part to doubts about the U.S. political system's ability to act to reign in the nation's ballooning deficit and debt, and called for a "balanced approach" to deficit reduction - one that includes both tax increases on high earners and "modest adjustments" to Medicare and other health care programs.
At 1:47 pm the S and P 500 was down 56 points. At 2:18 pm it was down 67 points. By the close it stood at nearly 80 points down for the day: