This law is a start, and should be implemented in every US state:

“On July 1st, California became the first state in the nation to try to reduce the power of bots by requiring that they reveal their “artificial identity” when they are used to sell a product or influence a voter. Violators could face fines under state statutes related to unfair competition. Just as pharmaceutical companies must disclose that the happy people who say a new drug has miraculously improved their lives are paid actors, bots in California—or rather, the people who deploy them—will have to level with their audience.”

www.newyorker.com/tech/anna…