Legal Definition of Congress: (a) In America, Congress is composed of the two legislative bodies, the Senate and the House of Representatives. (b) In international law, a Congress is an assembly of representatives from different countries who meet to consider matters for their common good | Gain a competitive edge as a business owner by understanding the legal definition and global impact of Congress. Learn how this legislative body shapes laws and promotes international cooperation to stay ahead in international trade and relations. Stay informed and prepared for potential changes or challenges to ensure the success of your business.