The U.S. stocks tumbled on Friday after a government monthly jobs report fell short of expectation, adding to fears that the U.S. economy will slow down in the second half of the year. According to the Labor Department, nonfarm payrolls fell by 131, 000 in July as the rise in private-sector employment was not enough to make up for the government jobs lost. Private-sector jobs, which were closely watched by the market, only increased 71, 000 last month, lower than economists' anticipation. However, the jobless rate, which is calculated using a separate household survey, held steady at 9.5 percent in July while economists were expecting it to edge higher to 9.6 percent. Friday's jobs report cast cloud over Wall Street as investors were once again focusing on economic data when the earnings season came to an end. A lack of job creation is now broadly regarded as the biggest obstacle in the rebound of U.S. economy. The Dow Jones industrial average tumbled 135.09 points, or 1.27 percent, to 10,539.89. The Standard & Poor's 500 index fell 15.37 points, or 1.37 percent, to 1,110.44 and the Nasdaq was down 28.17 points, or 1.23 percent, to 2,264.89. 