It's incidental to entry points into the US and pre-existing population centers. See the following density maps: 1. https://upload.wikimedia.org/wikipedia/comm

It's incidental to entry points into the US and pre-existing population centers. See the following density maps: 1. https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Asian_American_population_percentage_by_state_in_2010.svg/1280px-Asian_American_population_percentage_by_state_in_2010.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/As... 2. http://markettolatinos.com/wp-content/uploads/2011/02/graphicPercent2006.gif http://markettolatinos.com/wp-content/uploads/2011/02/graphi...