They declare illegal phone calls with voices generated with artificial intelligence. The unanimous ruling by the Federal Communications Commission comes as New Hampshire investigates robocalls that imitated Joe Biden's voice to discourage people from voting in that state.

The law gives call recipients the right to take legal action and potentially recover up to $1,500 in damages for each unwanted call. Those who violate the law can face steep fines, with a maximum of more than $23,000 per call, according to the FCC.