E.g. map of countries that have birthright citizenship: http://en.wikipedia.org/wiki/File:Jus_soli_world.png.
E.g. map of countries that have birthright citizenship: http://en.wikipedia.org/wiki/File:Jus_soli_world.png.
[1] http://en.wikipedia.org/wiki/Civil_Rights_Act_of_1866
[2] http://en.wikipedia.org/wiki/Fourteenth_Amendment_to_the_Uni...
[3] http://www.washingtonpost.com/wp-dyn/content/article/2010/08...
My brother was born just a few months after we immigrated to the U.S., and he was a U.S. citizen right off the bat, as much a citizen as anyone else and eligible to run for President. That wouldn't have been true in any Western European country.
To me, that suggests a pretty liberal attitude towards outsiders, i.e. making it tremendously easier to transition from being an "outsider" to no longer being an outsider.
[1] http://en.wikipedia.org/wiki/Fourteenth_Amendment_to_the_Uni...