The Supreme Court seems open to a Texas law aimed at blocking kids from seeing online pornography. But the justices could still send it back to a lower court for more consideration of how the age verification measure affects adults’ free-speech rights.

U.S. Supreme Court justices expressed worries on Wednesday over the availability of online pornography to minors as they weighed the legality of a Texas law that requires pornographic websites to verify the age of users,

How it rules on a Texas law requiring age verification on adult websites could shift the bounds of internet speech.