VOA视频：美国议员对中国对巴拿马运河的影响力感到关切

In his inaugural address, U.S. President Donald Trump vowed to put the Panama Canal, a key global shipping route, back under the control of the United States, amid fear of growing Chinese encroachment. U.S. senators examined security concerns surrounding the canal Tuesday and looked at next steps. VOA’s congressional correspondent Katherine Gypson has more.