As I mentioned in my Grey's Anatomy review video, the Libby Zion Law in New York State started this trend of instituting hourly caps on residents, and it spread to all 50 states at this point.
正如我在我的实习医生格蕾评论视频中提到的，纽约州的利比锡安法开启了对居民设定小时上限的趋势，并在此时传播到所有 50 个州。