Joe Biden's 'Battle Box' Gaffe During Speech After Trump Rally Shooting

As the US reeled from images of a bloodied Donald Trump waving his fist after the gunman opened fire at a campaign rally in Pennsylvania yesterday, Joe Biden - in his address to the nation - called for unity and said that American politics "must never be a literal battlefield".
While he appeared to start off well, the US President soon began to stumble over his words.

During his speech, Joe Biden inadvertently referred to resolving differences at the "battle box" instead of the "ballot box."