There's still no sign of the assassin who shot and killed United Health Care CEO Brian Thompson yesterday morning on a busy New York City street. But he may have left clues on the shell casings found at the scene. Meanwhile, Donald Trump's choice to lead the Pentagon remains defiant, refusing to bow out of a tough confirmation fight amid mounting allegations of misconduct. Plus, transgender rights taking center stage at the Supreme Court. We explore why justices may be leaning toward a ban on gender affirming care for minors in one state. 

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