In Texas, Florida, and more than a dozen other states, users who try to access the world’s largest pornography website are greeted by a surprising sight: a message on a black screen telling them they’re blocked because of the actions of their state legislature.

A panel of federal appeals judges has ruled that Tennessee can begin enforcing a law that requires pornographic websites to verify their visitors’ age

After being briefly put on hold, a law requiring adults to upload IDs, or other forms of identification, to access adult content will go into effect.

A majority of the Supreme Court signaled Wednesday that Texas may be permitted to require some form of age verification for pornographic sites, but left open the possibility that deeper First Amendment questions may not be resolved immediately.

Texas and 18 other states have recently enacted laws requiring pornography websites to verify the ages of their visitors.