A bill in the California legislature would regulate bots by making them disclose their automated nature. But how?

Robert M. Hertzberg’s hatred of bots is personal.

Mr. Hertzberg is a state Senator from California and last year, after he introduced a bail reform bill, he noticed that automated accounts on Twitter and Facebook were attacking him and his position. He is currently seeking re-election, and one of his opponents in the Democratic primary was a bail agent.

“The bail agents against me had hundreds of bots working in order to create the false impression that there were people against me,” Mr. Hertzberg said in a recent interview.
https://www.nytimes.com/2018/07/16/style/how-to-regulate-bots.html