https://action.freespeechcoalition.com/age-verification-bills/
In the United States, there are a number of "age verification" bills at the state level (these bills make it a pain for anyone to use a porn site) for you to contact reps to oppose.

I don't know if this is a complete list of them.

They use precisely the rhetorical tactic you'd expect, even though minors view porn and seem fine (even if we'd prefer they didn't).

A lot of it seems to be pushed by a certain infamous religiously motivated group. This group is based in Utah.

https://qoto.org/@olives/110382603821087306
https://qoto.org/@olives/110383293176711628
I covered similar initiatives in other countries here.

These bills are an affront to the Constitution. Similar bills were ruled unconstitutional by courts in the past.

They deprive you of your right to privacy and chill free expression. Also, under the First Amendment, you have a right to anonymity.