The key players in the legal dispute - Mr Tonkin, Mr Sim and Mr Sim's lawyer Michael Swift - refused to comment. Vicstock director Will Crozier, who played a key role in pulling the grain supply project together while battling cancer, could not be contacted yesterday. There is growing tension in the Federal Government on the issue of foreign investment in agriculture, with new Agriculture Minister and Nationals MP Barnaby Joyce blasting Indonesia's plans to buy cattle country and opposing US company Archer Daniels Midland's bid for GrainCorp. Treasurer Joe Hockey said in Bali yesterday that any decisions on foreign investment would be made on a case-by-case basis. "We will have a methodical process for evaluating individual proposals and you can be rest assured that my decision will not be contrary to the national interest," Mr Hockey said. If this is corporate farming then heaven help us." WA grain grower