U.S. stock index futures crept lower early on Tuesday, following Asian and European shares downwards, after a weak close on Wall Street on Monday.
Import prices declined 0.5 percent in October, while export prices fell 0.2 percent.
Wholesale trade is due later in the morning. In addition, the Treasury will sell $24 billion in benchmark 10-year notes.
Of likely interest will be a speech from Charles Evans, a member of the Federal Open Market Committee (FOMC), who has historically been dovish.