br (Reuters) - U.S. stock index futures climbed on Wednesday on expectations of a breakthrough in U.S.-China trade talks at the upcoming G20 Summit, while investors looked forward to Fed Chairman Jerome Powell’s speech for clues on the path of interest rate hikes. FILE PHOTO: Traders work on the floor of the New York Stock Exchange (NYSE) in New York, U.S., October 24, 2018. REUTERSBrendan McDermidFile Photo While President Donald Trump talked tough on the trade tariffs issue ahead of a high-stakes meeting with China’s President Xi Jinping later this week, White House economic adviser Larry Kudlow on Tuesday held open the possibility that the two countries would reach a trade deal. Boeing gained 1 percent and Caterpillar 0.4 percent.