With the resumption of parliament this week, and an election only months away, we have seen even more of the usual point-scoring about the cost of living, tax breaks for long lunches and budget deficits. But since the return of Donald Trump to the White House, the assumptions on which Australian economic policy have always been based are obsolete. It’s not just the “rules-based international order”, symbolised by the already moribund World Trade Organization, that is gone. Trump is ruling by decree (more politely referred to as “executive order”) and encountering little resistance. Corporations have rushed to buy his favour...