U.S. stock futures are in the red early morning on New Year’s Eve, after markets ended lower on Tuesday, as hopes of a year-end Santa Claus rally begin to fade.Markets are also jittery following President Donald Trump’s latest threats against Federal Reserve Chair Jerome Powell on Monday, threatening to file a lawsuit over what he called “gross incompetence,” while adding that he “still might” fire him, despite only five months remaining in Powell's term.See Also: Michael Burry Says Tesla Is ‘Ridiculously O ...