Are you suggesting the poor citizens of our country ought to be refugees within their own country in order to escape violence? That's a very bleak view of our country, but one that might actually be accurate.
http://www.chicagotribune.com/news/local/breaking/ct-african...
Moving costs money. Are you suggesting they simply leave everything behind and walk to a new city?
While we're talking about sources, how about a source for your claim that 99.9% of Americans can afford to move to a neighboring state.