Ohio Sen. Rob Portman: 'Never let North Korea off the hook' for Otto Warmbier's death

Ohio Sen. Rob Portman: 'Never let North Korea off the hook' for Otto Warmbier's deathOhio Sen. Rob Portman said "we should never let North Korea off the hook" for Otto Warmbier's death after Trump says he doesn't think Kim Jong Un knew about his condition



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