[dspillett]

No, but they have deniability. “We checked, and they weren't in your state as far as we can tall”.

Slightly aside, if you filter like this for any reason it is safer to check that the request is NOT coming from some other location – that way your main failure mode is accidentally screening someone in a state you don't need to, not accidentally letting someone in that you could face legal action for, though this is a harder check to make.

The blocked people that use VPNs may well appear to be coming from a non-US location too which probably makes the denial slightly safer.