Question:2) Explain quot;open markets and closed bordersquot; as it pertains to smuggling, free trade, and border enforcement.

Question:2) Explain "open markets and closed borders" as it pertains to smuggling, free trade, and border enforcement.

3) What are the challenges of facilitating legal border crossings while maintaining secure borders?

4) What has been the economic impact of terrorism on U.S. and Global Markets since 9/11?

5) Describe the impact of the General Agreement on Tariffs and Trade (GATT) and North American Free Trade Agreement (NAFTA) agreements on cross border trade in North America.