At the bottom of this page, there is a form you can fill out. This website says they will contact your local representative on your behalf. (And forward you any reply.)
Here's the auto-generated message:
I am a constituent living in [state] with urgent concerns about the lack of guardrails surrounding advanced AI technologies. It is imperative that we act decisively to establish strong protections that safeguard families, communities, and our children from potential harms associated with these rapidly evolving systems.
As companies continue to release increasingly powerful AI systems without meaningful oversight, we cannot rely on them to police themselves, especially when the stakes are so high. While AI has the potential to do remarkable things, it also poses significant risks, including the manipulation of children, the development of bioweapons, the creation of deepfakes, and the threat of widespread unemployment.
I urge you to enact strong federal guardrails for advanced AI that protect families, communities, and children. Additionally, please do not preempt or block states from adopting strong AI protections that may be necessary for their residents.
Thank you for your time.
[name]
New York