An internal Meta policy document reveals the social-media giant’s rules for chatbots, which have permitted provocative behavior on topics including sex and race.

A day after Reuters reported that Meta's AI rules permitted children to have "sensual" chats, a Republican senator launched an investigation into the tech giant. On Friday, Missouri Sen. Josh Hawley posted a letter he sent to Mark Zuckerberg along with the announcement of the investigation.

Meta is revising policies that allowed its AI bots to engage in "romantic or sensual" conversations with young children, following an explosive report.