US-ASEAN Business Council | 14,995 followers on LinkedIn. Advancing US-ASEAN Business Relations | The US-ASEAN Business Council is the premier advocacy organization for U.S. corporations operating within the dynamic Association of Southeast Asian Nations (ASEAN), serving as the leading voice of the U.S. private sector in promoting mutually beneficial trade and investment relationships between the United States and Southeast Asia. ASEAN is the second-fastest growing economy in Asia at $2.4 trillion, and has attracted more U.S. investment than any other destination in the whole of Asia ($159 billion). The Council's members include more than 160 of the most successful and innovative corporations in the world.