If US growth accelerates, America’s capacity to consume other countries’ goods and services will increase, thereby boosting growth around the world. At a time when Europe is drifting and Asia is slowing, only the US (or, more broadly, North America) has the potential to drive global economic recovery.
部分原因是经济上的。美国经济仍占世界总产出的四分之一左右。如果美国的增长加速，则美国消费他国商品和服务的能力就会增加，从而提振世界增长。当欧洲正在衰落、亚洲正在减速的时期，只有美国（或者更广义地说，只有北美）有能力驱动全球经济复苏。