U.S. stock markets were wavering early on Wednesday, putting at risk the market rally that started on the back of a weaker-than-expected jobs report last week. Dow Jones Industrial Average futures were down 53 points, or 0.1%. The market is digesting comments from Federal Reserve Bank of Minneapolis President Neel Kashkari, who said Tuesday that economic growth and persistent inflation argue for holding interest rates at their current level for the foreseeable future.