Wall St set to open lower on New York Fed chief's comments

Wall Street was set to open slightly lower on Tuesday after New York Federal Reserve President William Dudley said an interest rate hike in September was possible. "We're edging closer towards the point in time where it will be appropriate I think to raise interest rates further," Dudley, a permanent voting member of the Federal Reserve, said in an interview on Fox Business Network. Dudley's comments raised expectations among traders of an interest rate hike this year.