Elon Musk, the billionaire founder of Tesla and Space X and owner of X who’s gone all-in on Republican Donald Trump’s candidacy for the White House, has already committed at least $70 million to help the former president. Now he’s pledging to give away $1 million to voters for signing his political action committee’s petition backing the Constitution.

The giveaway is raising questions and alarms among some election experts who say it is a violation of the law to link a cash handout to signing a petition that also requires a person to be registered to vote.