If the Australian grain-trading company AWB Ltd’s culpability in the oil-for-wheat scandal — involving kickbacks to the former Iraqi dictatorship of Saddam Hussein — warranted the dismantling in 2008 of Australia’s wheat single-selling desk, then the government should reject U.S. corporation Archer Daniels Midland’s takeover bid for Australia’s GrainCorp, given ADM’s long history of corruption. Dwayne Andreas, Archer Daniels Midland (ADM)’…