Melania Trump’s senior advisor Marc Beckman took to social media after Tom Cruise’s “Digger” flopped at the box office to explain to people how the First Lady’s much-reviled documentary “Melania” performed better at the box office earlier this year than mega-star Cruise’s latest endeavor. “On a per-theater basis, ‘Melania’ outperformed Tom Cruise’s ‘Digger’ by approximately