At a hearing in San Francisco federal court on Thursday, U.S. District Judge James Donato said he was “concerned” with Airbnb’s position because the San Francisco statute targets only bookings processed by Airbnb, not what the company publishes on its website.

Basically, the law would require Airbnb to verify that the person renting the property was registered with the city. Airbnb is saying that it is the responsibility of the person to follow the law and they are providing a publishing service.