Which of the following is a responsibility of the President?

Making treaties with foreign countries is a significant responsibility of the President. This role is outlined in the U.S. Constitution, where the President has the authority to negotiate and enter into treaties, provided they receive ratification from two-thirds of the Senate. This power allows the President to engage with other nations, facilitating diplomacy and international relations, which are crucial for the interests and security of the United States.

The other options describe responsibilities that do not fall under the President's duties. Drafting new laws is primarily the role of Congress, where legislators propose and debate potential laws. Enforcing state laws is typically the responsibility of state governors and local authorities, while judging legal disputes is a function reserved for the judicial branch of government, specifically within the court system. This distinction of powers ensures a system of checks and balances, which is foundational to the U.S. system of government.