The law aims to limit minors' exposure to sexually explicit content, but critics have argued it violates the freedom of speech.

The law, meant to shield minors from sexual materials on the internet by requiring adults to prove they are at least 18, was challenged on First Amendment grounds.

The Supreme Court on Friday upheld a Texas law aimed at blocking children under 18 from seeing online pornography. Nearly half all states have passed similar age verification laws as smartphones and other devices make it easier to access online porn,