In the past I've stated a requirement for training and certification is fine - actually more than fine - it's ideal.

When you think about it...we require people to pass a driving test, and to pass other types of tests....

I actually know a few people (who live in the western part of the U.S.) who are AGAINST this (testing, training, rules, etc.)....and I've argued against them as hard as I've argued against anyone on this topic.