By Jeff Mason and Trevor Hunnicutt JOINT BASE ANDREWS, Md. (Reuters) – U.S. President Joe Biden plans to speak with his Chinese counterpart, Xi Jinping, by the end of the month at a moment of simmering tensions between the countries over Taiwan and trade. “I think I’ll be talking to President Xi within the next 10 days,” Biden told reporters as he returned from a climate-related trip to Massachusetts. The long-discussed call between the two leaders, their first in four months, would come at a crucial moment given tensions over the status of Taiwan, and as the Biden administration weighs cuttin…