This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Sec 5 is the means of enforcing sec 3
That makes no sense. Why would
be included in section 3 if congress has the power to enforce (or not enforce) the clause by simple majority. It’s obviously a self-executing clause.