Excellent article.

Here is another relevant statement about the 14th Amendment:

"The (Citizenship) clause's meaning was tested again in the case of United States v. Wong Kim Ark 169 U.S. 649 (1898). The Supreme Court held that under the Fourteenth Amendment a man born within the United States to Chinese citizens who have a permanent domicile and residence in the United States and are carrying on business in the United States—and whose parents were not employed in a diplomatic or other official capacity by a foreign power—was a citizen of the United States. Subsequent decisions have applied the principle to the children of foreign nationals of non-Chinese descent."

Fourteenth Amendment to the United States Constitution - Wikipedia, the free encyclopedia