I was wondering if you knew where I could get useful information about this topic. Educational Foundation of NRA has a program called Barcode. They may also have a summary of jurisdictions that require alcohol service training.
Many states have training criteria but most mandatory training is operated on local level.
They regularly lobby concerning bac legislation. Each type has an association of regulators. Not sure of the names. They have a web page. Discussions regularly quote the alcohol related crash rate and then leap to conclusions about drunk driving.