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S&P 500 drops 1 percent as banks weigh



    NEW YORK (Reuters) - U.S. stocks extended declines on Tuesday with the S&P 500 down slightly more than 1 percent, weighed down by bank stocks as investors fret over the implications of a federal financial regulation proposal.

    The Dow Jones industrial average dropped 63.41 points, or 0.60 percent, to 10,562.42. The Standard & Poor's 500 Index fell 10.28 points, or 0.90 percent, to 1,126.66, after earlier falling 1.07 percent to a session low at 1,124.74. The Nasdaq Composite Index lost 28.06 points, or 1.19 percent, to 2,326.17.

    A final vote on the biggest overhaul of Wall Street rules since the 1930s is expected in a few days after key senators reached a compromise on the balance of power between state and federal officials.

    (Reporting by Rodrigo Campos; Editing by Jan Paschal)