U.S. stocks slipped alongside crude oil as commodity traders grew impatient over negotiations among members of the Organization of Petroleum Exporting Countries. Saudi Arabia's oil minister said producers will convene again in March to negotiate a production freeze. Consumer confidence fell to its lowest level in seven months in February as consumers grew more anxious over general business conditions. However, consumers were fairly certain the economy would expand at a moderate pace in the near term. The housing sector continued to expand at a robust pace as existing home sales rose 11% in January from a year earlier. Sales of homes already built reached their highest pace since 2007. TheStreet's Keris Lahiff reports from Wall Street.