Sen. Lindsay Graham questioned whether the U.S. can continue to work with Ukrainian President Volodymyr Zelenskyy on Friday.
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"What I saw in the Oval office was disrespectful and I don't know if we can ever do business with Zelenskyy again," Graham told reporters outside the West Wing.
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He said Zelenskyy has "made it almost impossible to sell to the American people that he's a good investment."
Graham called the meeting a "complete, utter disaster" and said he's "never been more proud" of Trump.
Asked whether Zelenskyy should step aside, Graham responded: "He either needs to resign or send somebody over that we can do business with, or he needs to change."