U.S. shares gain amid China growth target and U.S. stimulus program

Shares on Wall Street accelerated on Tuesday as China's government announced its decision to keep its economic growth target at the same level for 2013 and amid optimism the Federal Reserve will maintain its monetary policy in order to support the growth. The S&P 500 futures gained 0.4% to 1,531.2 and the Dow Jones Industrial Average futures added 0.3% to 14,159 on Tuesday.