HARRISBURG (Oct 22): For four days billionaire Elon Musk toured Pennsylvania, putting his money and fame into helping Republican Donald Trump's campaign to take back the White House in November.

Musk drew praise from conservatives at his rallies while fielding questions about artificial intelligence, government regulation, sentient robots and vaccines.

He also made a string of false claims about election fraud, some of them echoing those made by Trump the last four years.

The CEO of Tesla and SpaceX and owner of the X social media platform, Musk also handed out two US$1 million (RM4.3 million) cheques to randomly picked people who signed his online petition backing US constitutional rights to freedom of speech and bear arms.

Musk, 53, has more than a passing interest in Trump's success. If reelected, Trump promises to make Musk head of a government efficiency commission, a job Musk vows will help rid the country of regulations he views as bad for the economy and a deterrent to doing business.