The Washington Post just published an interesting map detailing the changes in US immigration patterns in the past 100 years. Breaking it down by state, the maps show how the Mexican immigrant population has become the largest immigrant population in most of the states in the U.S. When taking into account Cuban immigrants in Florida, Dominican immigrants in NY and Rhode Island, and Salvadoran immigrants in Maryland and Virginia, Latinos as a whole represent the largest immigrant group in 39 of the 50 states.