https://amgreatness.com/2018/10/30/birthright
In 1989, an illegal alien being escorted back to the border gave birth in an Immigration and Naturalization Service van. That child was an American, thanks to our granting citizenship to children born on U.S. soil—a generosity that also extends to children born on any one of 15 islands between the Philippines and Hawaii.
Our promiscuity with citizenship, however “generous” it may seem, effaces the salience of an institution central to the concept of nationhood. That is doubtless what President Trump had in mind when he told reporters from Axios that he intends to sign an executive order that would put a stop to America’s birthright citizenship policy.
The United States and Canada are the only two “developed” countries that retain unrestricted birthright citizenship laws. While many Latin American and Caribbean nations also maintain lenient naturalization laws, it is important to understand them in their historical context. Those laws came about not out of a liberal exigency to bestow citizenship onto foreigners, but rather as a mechanism of empire-building designed subdue indigenous populations by growing the number of Europeans in their midst. “The birthright laws in South America have remained due to low immigration numbers,” explains John Skrentny, a sociologist at the University of California, San Diego.
In other words, if Scots-Irish Americans began caravanning to Mexico, demanding jobs and welfare, and driving up crime rates, odds are good that Mexico would turn “nativist” and amend its constitution to decrease the liberality of their naturalization laws. Indeed, every other Western country that has experienced mass immigration has amended or repealed their naturalization laws in response.
The British did so beginning in 1962, responding to the mass migration of Indians, Poles, and Ukrainians. Parliament in 1981 passed the British Nationality Act, which made it “necessary for at least one parent of a United Kingdom-born child to be a British citizen, a British Dependent Territories citizen or ‘settled’ in the United Kingdom or a colony (a permanent resident).”
Similarly, the French responded to mass migration of Muslim North African immigrants by changing the law to require French-born children of immigrants to apply for citizenship before their 18th birthday. The law has since been eased somewhat thanks to liberal policymakers, but the French still restrict citizenship to children of foreign parents who, at the age of 18, have lived in France for five of the previous seven years.