Visiting the Heineken website in the U.S. requires that you assert you are over the age of 21. Texas has instituted I.D. verification for pornography.
Regardless of how you feel about this law, it is not accurate to say the U.K. is unique in implementing it.
Saying that illegal migrants should be sent back home can literally land you at the police station. A hotel worker was arrested for testifying to what he saw in his hotels, ie. migrants being hosted, given a phone, meals, and NHS visit once every two weeks.