Wall St lower as weak China data spooks investors

Wall Street was lower on Tuesday after weak Chinese data rekindled fears of a global economic slowdown led by the world's second-biggest economy. China's February trade performance was far worse than economists had expected, with exports tumbling the most in over six years. "(The China data) suggests the fragile nature of the market's psychology right now," said Scott Brown, chief economist at Raymond James in St. Petersburg, Florida.