Why cheap oil may not help the US as much anymore By: CNBC.com News November 04, 2014 at 09:25 AM EST Falling oil prices have always been somewhat of a double-edged sword. But some say the negatives to the economy are starting to take on added concerns. Read More >> Related Stocks: Chevron Corp Exxon Mobil iPath Dow Jones-Goldman Sachs Crude Oil Fund