Senator SINODINOS (New South Wales—Minister for Industry, Innovation and Science) (14:48): Let me make this point: regulation on use is a matter for the states and territories. We're working with the states and territories to clarify these enforcement and compliance obligations. It's not a matter of stopping stuff at the border, because at the border it's not necessarily the case that you can predict that the cladding will be used for a particular non-compliant or non-conforming purpose. The point here is to work with the states and territories to have adequate controls and enforcement. It is a matter for the states and territories. I have indicated a number of the mechanisms we've put in place to work with them in order to enforce the appropriate regulation. The PRESIDENT: Senator Carr, a final supplementary question.