"blame"?

America has always had open doors to the world. There is still lots of open country here. These folks are providing jobs building these homes. They wish to live here. America, the land of opportunity. These folks aren't coming here for a free hand out. These folks are paying cash for their homes, more than likely, they will start businesses and create more jobs.

Look at the bright side. What happen to greeting your new neighbors with a welcome basket and getting to know them?