Mexico, officially the United Mexican States, is a federal republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of Mexico. Wikipedia

The contiguous United States is the 48 adjoining US states plus Washington, DC on the continent of North America that are south of Canada and north of Mexico. Wikipedia