美联储理事库格勒：贸易是美国经济前景的主要推动力。

Core Viewpoint - Trade is identified as the primary driver of the U.S. economic outlook according to Federal Reserve Governor Christopher Waller [1] Group 1 - The emphasis on trade highlights its significant role in shaping economic growth and stability in the U.S. [1] - The statement suggests that fluctuations in trade policies and international relations could have substantial impacts on the U.S. economy [1]