Republican Sen. Rand Paul characteristically broke with the majority of his GOP colleagues in his reaction to growing accusations of war crimes facing the Pentagon following the reveal of the second boat strike in September, which, according to reports, targeted survivors of an initial strike.
Paul said he had concerns about reports that Hegseth gave an order "that would say, 'kill them all,'" words the White House denied Hegseth said.
He also said he had concerns about the conflicting explanations about who knew about the details and when.
Most Republican senators responded to repeated questions about the Sept. 2 strikes by sidestepping and saying they support the overall mission in the Caribbean.
Sen. Eric Schmidt told reporters there was "100% legal justification for taking out the narco-terrorist boats."
-ABC News' Jay O'Brien, Emily Chang and Allison Pecorin