CLAREMONT, CALIFORNIA — Can U.S. President-elect Joe Biden walk and chew gum at the same time? If walking is managing domestic pressures, and chewing gum is pursuing a balanced foreign policy, the answer is far from clear. The tension between bipartisan calls to contain China and the imperative of cooperating with Chinese President Xi Jinping on climate change is a case in point. Biden plans to marshal a broad alliance of democratically-minded Pacific and European countries to check Chinaâ€