Answer:
Step-by-step explanation:
Answer: Negotiating treaties requires both Congress and the president. The president has the authority to negotiate treaties, but the Constitution stipulates that the president must receive the advice and consent of two-thirds of the Senate before a treaty can be ratified. Congress also has the power to pass legislation related to foreign policy, such as authorizing the use of military force and regulating commerce with other countries. Finally, Congress has the sole power to declare war, though the president has the authority to use military force in certain situations.