My question is to the Minister for the Environment. I refer the minister to the statement of the managing director of Adelaide Brighton, Mr Mark Chellew, who said:

The removal of the carbon tax by 1 July 2014 could provide an after tax benefit of circa $2 million compared to 2013 ...

However there is political uncertainty around the repeal process—

What is that political uncertainty Mr Chellew refers to, and how could that be removed?