 "A Wall St. sign is seen outside the entrance of the New York Stock Exchange in New York's financial district")
US stocks were lower at the open on Tuesday, struggling to sustain a rally yet again, after oil prices resumed their declines.
The Dow Jones industrial average fell 47.46 points, or 0.29%, to 16,573.2, the S&P 500 lost 6.57 points, or 0.34%, to 1,938.93 and the Nasdaq Composite index dropped 21.08 points, or 0.46%, to 4,549.53.
