US stock market slightly higher open.

U.S. stock index futures were a little higher Tuesday morning.

At around 2:00 a.m. Eastern Time, Dow futures rose 40 points, indicating a positive open of quite 53 points. Futures on the S&P and information systems were each slightly higher.

Market focus is basically attuned to international trade developments once China's vice government minister aforementioned that Beijing and Washington had achieved some progress....