Billionaire Elon Musk's breakup with president Donald Trump, a feud that's been many months in the making, has become incredibly messy. The pair have butted heads over Trump's tax bill, which is expected to add trillions of dollars to an already colossal mountain of debt. Musk has excoriated the bill as a "disgusting abomination," ominously calling for any Republican lawmakers willing to support it to be "fired" during next year's midterm elections. As a move that's widely been seen as retribution, the White House unexpectedly announced over the weekend that it's pulling Jared Isaacman's nomination — Musk's personal pick — […]