Final answer:
The foreign policy powers of Congress are shared with the president, but the president usually takes the lead in international affairs. Congress has the authority to amend, oversee, and allocate budget for foreign policy, as well as appointments, treaties, and war. The president has the power to issue executive orders and engage in military action.
Step-by-step explanation:
The foreign policy powers of Congress include amending, oversight, and budgetary powers, as well as the constitutional powers related to appointments, treaties, and war. These powers are shared with the president, meaning that both branches of government have a role in shaping and implementing foreign policy. However, the president is usually the primary leader in international affairs, with the ability to issue executive orders and engage in military engagements without formal declarations of war.
While Congress can sometimes work to limit the president's autonomy in foreign policy, the president's authority is generally maintained due to the use of executive orders and the power to engage in military action without formal declarations of war. Additionally, forces outside of the government, such as think tanks, interest groups, and public opinion, can also influence foreign and military policies.