Final answer:
Congress is involved in economic foreign policy primarily through approving aid, partaking in the oversight and budgetary process, and its constitutional power in the approval of treaties and ambassador appointments.
Step-by-step explanation:
Congress participates in several areas of economic foreign policy, including approving aid to another country. This is part of Congress's broader role in foreign policy, encompassing their oversight, budgetary powers, and involvement in the constitutional process for treaties and appointments. For instance, Congress approves treaties through a vote in the Senate, allocates funding for foreign aid, and confirms the appointments of new ambassadors. In addition, Congressional committees, especially those on foreign relations and armed services, play key roles in overseeing embassy operations and other aspects of international relations. However, the negotiation of trade agreements is primarily an executive function, carried out by the President and their appointed negotiators, although any resulting agreements may require congressional approval, particularly through a congressional executive agreement.