Stocks fell more than 1 percent on Monday amid weaker-than-expected manufacturing data and uncertainty about whether the debt deal in Washington will pass.

The Dow Jones industrial average <.DJI> was down 124.42 points, or 1.02 percent, at 12,018.82. The Standard & Poor's 500 Index <.SPX> was down 14.57 points, or 1.13 percent, at 1,277.71. The Nasdaq Composite Index <.IXIC> was down 28.93 points, or 1.05 percent, at 2,727.45.

(Reporting by Caroline Valetkevitch; Editing by Kenneth Barry)