Mr. Musk is fundamentally a creature of Silicon Valley, a scene that initiated an entire revolution in power dressing. The young masters of that universe dressed down to show that they were members of a new elite — one that refused to dress like the grown-ups they were about to topple. It was the defeat of the suit by the T-shirt.

The White House is trying to calm concerns about the future of Social Security amid Elon Musk's latest comments and critics warning the Trump administration is 'gutting it.'

Ethics experts are sounding the alarm that the president's event with Elon Musk could eliminate the lines of proper objectivity from elected officials.