Mourners gather for a vigil service for victims of the Sandy Hook Elementary School shooting at St. Rose of Lima Roman Catholic Church in Newtown, Conn., on Friday night. Andrew Gombert/AP hide caption

itoggle caption Andrew Gombert/AP

Alan Krueger, chairman of the president's Council of Economic Advisers, warns that consumer spending will drop if Congress and the White House fail to reach a deal on spending cuts and tax increases. Jewel Samad/AFP/Getty Images hide caption

itoggle caption Jewel Samad/AFP/Getty Images