And you've also got boundaries between states who, for local reasons, do things differently.

Sometimes for good local reasons, because the circumstances are different.

But then there becomes a problem that if you want to operate across the border, then I might comply at home, but do I comply in the market that I want to move into? On the one hand, you want to have the opportunity for states to experiment and do things differently and then to learn from each other.

But I think that's where the action is, learning from each other.

So let's have an expectation that we will share information, we will share experiences, we will have mechanisms for learning about good regulatory practice from each other, and we will have the expectation that we will align unless there's some good reason not to.

How would it work?

Now, there are a couple of other instruments you can use to do that.

One that I like is where the minister says to the officials, here's how I want you to operate.