Bruce Springsteen and Donald Trump aren't new foes. But it's getting nasty between them. The veteran rocker took to the stage in England to denounce Trump's administration.

Donald Trump wasn’t happy to hear that Bruce Springsteen hasn’t backed down from calling him an “unfit president” as he performs in Europe, so he went on another rant on social media overnight Sunday, demanding a “major” investigation be launched against the rock ‘n’ roll legend for singing at a Kamala Harris rally in October.