US warns Musk’s Super Pac $1m-a-day giveaways may be illegal, reports say

Billionaire promised to give $1m each day until election day to someone who signs petition supporting US constitution

The US justice department has sent a letter to Elon Musk's Super Pac warning that the billionaire and Tesla CEO's $1m-a-day giveaways may violate federal law, according to multiple reports.

A letter from the department's public integrity section, which investigates potential election-related law violations, went to the Pac, reports in CNN and the New York Times said. The justice department and Musk's America Pac did not immediately respond to a request for comment.