A Democratic senator has sent a letter to Amazon.com Inc. asking the retailer to explain recent increases in grocery prices that the lawmaker says appear linked to the Trump administration’s tariffs on Chinese imports, Axios reported, citing the correspondence. The senator requests that Amazon detail how the 145% tariff implemented in April has affected the company’s supply chain and pricing decisions, and what steps it is taking to shield consumers from higher costs. The letter also seeks disclosure of the size and timing of price hikes across key food categories sold on the platform. Amazon had not publicly responded to the inquiry at the time of the report.