Early indications suggest that Wall Street stocks may open Tuesday’s session higher, although the mood reflected uneasiness following recent gains. Commodities are lower, with oil being the exception with its modest gain, and the dollar is firmer. With little corporate news to sway the markets, it is all about fears of a potential June interest rate hike and the interpretation of the week’s key economic data, including the monthly NFP report, against the backdrop. Personal income and spending, consumer confidence and Chicago area business barometer and the direction of commodity prices could be key for the market movement of the day.