An article compares UK and US online slot standards, including testing, game...
https://raymondssuperblogs.brightsora.com/posts/why-does-regulation-force-casinos-to-publish-accurate-rtp
An article compares UK and US online slot standards, including testing, game information and access. It notes UKGC testing and explains that US rules differ by state; New York permits online sports betting, but not online casino play for residents.