The policies made in the United States can have an important impact on the rest of the world and policy makers must consider the effect of U.S. policies not only on the citizens of the United States, but the global community as well. The North American Free Trade Agreement (NAFTA) is an example of a policy of the United States that has changed the economy of Mexico, and in many ways made Mexico more dependent on the United States. This paper looks at the effect NAFTA has had on the economies, jobs, and workers of both Mexico and the United States. After nearly 15 years in effect, it is important to examine if this free trade agreement is meeting its original goals and yielding positive results in both Mexico and the United States. Additionally, it examines the responsibility of social workers in the United States to be aware of international policies, such as NAFTA and the need for the profession to respond to these policies. If United States citizens are prospering at the expense of the poor and marginalized worldwide, social workers need to advocate on behalf of those throughout the world whose voice is not heard in this country and take action against detrimental policies.