据华尔街日报：美国参议员就关税影响向克罗格和沃尔玛提出质询。

Group 1 - U.S. senators are questioning Kroger and Walmart regarding the impact of tariffs on their operations [1] - The inquiry focuses on how tariffs affect pricing and supply chain dynamics for these major retailers [1] - The discussions highlight the broader implications of trade policies on consumer goods and retail pricing strategies [1]