A trade agreement being discussed between the United States and Indonesia could lead to a massive expansion in bilateral trade between the two countries, the head of Indonesia's chamber of commerce told Reuters. The agreement, which could be completed next month, could increase trade between the U.S and southeast Asia's largest economy four-fold from the current level of around $40 billion per year, Anindya Bakrie, Chairman of Kadin, said in an interview at the World Economic Forum in Davos, Switzerland.