U.S. stocks fell on Tuesday as the Federal Reserve began its two-day policy meeting, with the Dow Jones Industrial Average dropping about 0.7%, marking its eighth consecutive loss. The S&P 500 and Nasdaq Composite also declined around 0.5%, despite stronger-than-expected retail sales data showing a 0.7% increase in November.Investors are anticipating a 0.25% interest rate cut on Wednesday, which some believe could be the last for a while due to persistent inflation concerns. Meanwhile, Nvidia's shares fell over 2%, continuing a downward trend from its November peak, while Bitcoin prices briefly surpassed $108,000.