Laws limiting fundamental constitutional rights are subject to "strict scrutiny", which means they must be justified by a compelling government interest, narrowly tailored, and be the least restrictive means to achieve the interest in question. One might reasonably argue even that standard gives the government too much leeway when it comes to fundamental rights.

Age restrictions narrowly tailored to specific content thought to be harmful to minors have often been tolerated by the courts, but something broad like all book stores, all movie theaters, or all app stores violates all three strict scrutiny tests.