Elon Musk has praised Donald Trump as the only candidate “to preserve democracy in America." The SpaceX and Tesla CEO stood alongside the GOP nominee at a rally Saturday in Butler, Pennsylvania, where Trump had survived an assassination attempt in July.

Mr. Musk, the world’s richest man and the leader of Tesla and X, delivered a dark warning during an animated appearance at former President Donald J. Trump’s rally.

After a few introductory hellos yesterday in Butler, Pennsylvania, Donald Trump gestured to a screen showing the same graph on illegal immigration that he had been talking about when he was nearly assassinated in July and delivered his real opening line: “As I was saying