A customs union was formed between Guatemala and Honduras to boost trade by reducing tariffs. This is the first of its kind in Central America and could lead to more economic integration in the region. The union may attract more foreign investment and help resolve border disputes. The US's commitment to tariff-free trade in NAFTA should ease concerns about DR-CAFTA's future. Increased deportations from the US may discourage open borders between the north and south of the Isthmus.