I know Australia does.

The US does. Anyone born in the US is entitled to US citizenship - the 14th amendment says so. This is irrespective of their parent's nationality

I think there are ONLY twelve countries that do allow citizenship by birth regardless of the citizenship of the parents. These are Argentina, Brazil, Cameroon, Canada, India, Jamaica, Mexico, New Zealand, Pakistan, Spain, United States and Venezula. In 2004 Ireland changed their constitution and no longer allow such "birth citizenships". I think we should follow suit. Many countries insist at least one parent be a natural born citizen. Didn't know Aussie's were in.

Any idea on Chile

Does anyone know if Chile is there too ?

14th Amendment - Section 1. "All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside." Which I think is pretty black and white (no pun intended).

god bless America :)

States and territories that observe jus soli include: * American Samoa (birth in American Samoa renders American Samoan and U.S. nationalities, but no birthright to U.S. citizenship) * Antigua and Barbuda * Argentina * Azerbaijan * Barbados * Belize * Bolivia * Brazil * Canada * Chile (children of transient foreigners or of foreign diplomats on assignment in Chile only upon request) * Colombia * Dominica * Dominican Republic * Ecuador * El Salvador * Fiji[6] * Grenada * Guatemala * Guyana * Honduras * Jamaica * Lesotho * Mexico * Nicaragua * Pakistan * Panama * Paraguay * Peru * Pridnestrovian Moldavian Republic * Saint Christopher and Nevis * Saint Lucia * Saint Vincent and the Grenadines * Trinidad and Tobago * Turkish Republic of Northern Cyprus * United States * Uruguay * Venezuela In a number of countries, the automatic application of jus soli has been modified to impose some additional requirements for children of foreign parents, such as the parent being a permanent resident or having lived in the country for a period of time. Jus soli has been modified in the following countries: * United Kingdom on 1 January 1983 * Australia on 20 August 1986 * Republic of Ireland on 1 January 2005 * New Zealand on 1 January 2006 * France also operates a modified form of jus soli German nationality law was changed on 1 January 2000 to introduce a modified concept of jus soli. Prior to that date, German nationality law was based entirely on jus sanguinis

I have a feeling that they all do because it's the place of birth that qualifies an individual as a citizen and not his/her descent