UK and US slot rules differ in testing, disclosures and access. The article...

https://eduardosexpertnews.opalvector.com/posts/why-do-people-say-the-uk-is-the-gold-standard-for-online-slots

UK and US slot rules differ in testing, disclosures and access. The article explains that UKGC testing applies to games at licensed sites, while US laws vary by state; New York allows online sports betting but not online casino gambling.