Zelenskyy's meeting with a bipartisan delegation of the U.S. Senate took place before a contentious Oval Office meeting with Trump and others.
Sen. Lindsey Graham said Zelenskyy needs to either resign or change because Americans may not be willing to do business with him.
President Volodymyr Zelensky said that if Lindsey Graham were a Ukrainian citizen, his opinions on the president's resignation would hold weight.
Foreign leaders rallied around Zelenskyy this weekend, but Trump still has the power to cause lasting damage to Kyiv's war effort against Russia.