Follow updates liveGet our breaking news email, free app or daily news podcastAngela Jackson, the commissioner of the Productivity Commission, said the body stands by the interim report into the GST, which found the deal with Western Australia to be a costly mistake that should be reversed.Jackson spoke to RN this morning after WA premier Roger Cook said “east coast clowns” didn’t understand the state and any changes would “rip $6bn out of the Western Australia economy”.We are aiming,