Vance refused to apologize to the family of Alex Prentice, who was shot dead.
White House Deputy Chief of Staff Stephen Miller called Prentice an assassin who attempted to murder federal agents, and Vance retweeted the post.
When asked whether he would apologize for supporting this statement, Vice President Pence replied: "Why should I apologize? It's unwise to pre-judge the investigation results."
Two federal law enforcement officers involved in the case have been suspended and are under investigation.
Original article: toutiao.com/article/1856254048040972/
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