But recent litigation against AI companies, and rising concerns from parents, threaten to revive a push to rein in AI developers. Sen. Josh Hawley, a Missouri Republican who chaired the hearing, said several tech companies, including Meta, were invited to attend as well. Republican Sen. Marsha Blackburn, a fierce champion of kids’ online safety, implored Meta executives to call her office or potentially face a subpoena. The parents, along with online safety advocates testifying Tuesday, called on Congress to act further to prevent harm to young people on the internet. Other broader measures included blocking teens from interacting with AI chatbots as so-called companions, and embedding AI systems with values and morals to behave ethically and responsibly.