Firstly, the law didn't state "conception", but birth. Secondly, I may have left out an important detail (recollection and all), that this law only applied to children born in a foreign country to one US parent.
As I said earlier, the exact statute was posted here on FR many, many times back in November, when the issue was burning up JimRob's bandwidth. It's here.
Yep - I tracked it down, read it, and appreciated that information. It didn't change anything, but was good information and useful helping other people understand the whole picture.
Have a good one.