Billionaire's estranged daughter has used rival social media platforms to attack Trump's anti-transgender executive order, and her dad's salute.

Elon Musk, the close Trump adviser who has his own AI company and was notably not at the press conference, erupted Wednesday with a relentless stream of online mockery. “They don’t actually have the money,

He previously floated a joint venture, saying that the US should be entitled to half of the app.