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- Sen. Lindsey Graham said Nikki Haley may hurt her chances of being Trump's VP running mate.
- Graham said the longer his fellow South Carolinian challenged Trump, "the more scar tissue accumulates."
- Haley has repeatedly said she does not want to be vice president.
Sen. Lindsey Graham has a message for his fellow South Carolinian Nikki Haley if the former UN ambassador wants to eventually become former President Donald Trump's running mate.