The Productivity Commission stands by its interim report on the GST, which deemed the deal with Western Australia a costly error. Commissioner Angela Jackson responded to Premier Roger Cook's criticism, where he called those outside WA "east coast clowns." Jackson explained that the commission aims to inform public policy debate, even when heated. She felt the Premier's comments crossed a line by attacking the commission's integrity. While welcoming debate and criticism, Jackson stated that undermining their integrity is unacceptable. She also highlighted this trend of personal attacks in public debate internationally. Jackson emphasized that the commission's process is independent of political influence. She asserted their position of being above politics in the Australian public policy landscape. The commission believes constructive engagement is essential for strengthening their work. Jackson concluded by reiterating their commitment to objective policy advice.