Joel wrote:

[...]
It used to be a law that beer could not have the alcohol
content listed

With a notable exception: If a given state chose to require
beers to list alcohol content, like Oregon does/did. Not all
beer sold here *did* have alcohol content listed, though, I
suppose due to slackery on the part of out-of-state brewers.

(while liquor and wine had to have it; go
figure). That law changed several years ago, so it's up
to the brewer/importer whether it's listed. FWIW I see
more beers with abv listed than otherwise.

I think it's still a requirement in Orygun.