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CNBC's Kayla Tausche discusses the tumble in U.S. stock futures as global markets falter overnight on the heels of weak economic data out of China.
Gov. Scott Walker describes himself as just a normal guy with a wife, two kids and a Harley. He discusses his Reagan-inspired policies and what sets him apart from the other Republican presidential candidates with CNBC's John Harwood.
A slowdown in China manufacturing activity has resulted in world market sell-off, as well as sharply lower U.S. stock index futures, following the worst month for the S&P 500 in more than three years.