The Supreme Court appeared open Wednesday to upholding a Texas law requiring pornography websites verify the age of their users, as they expressed concerns during oral arguments about the ease children have accessing explicit videos online.

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.

Invoking older examples of accessing pornographic materials, justices grappled with the constitutionality of a law that requires adults to input their age into explicit websites