Kentucky Sen. Rand Paul, who ran unsuccessfully against Donald Trump in the 2016 Republican nomination battle, has been a bit of a thorn in the president's side ever since.
Most prominently, Paul has battled Trump tooth and nail on health care. “Republicans across the country are unified on repeal, not on replace,” Paul said this week. But the two have actually battled for the last few years, with Trump tweeting in 2015:
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