I want to know this for sure. Earlier up thread someone said it WAS retroactive. I am just learning this right now. Until today I only knew that Obama’s mom in 1961 could definitely not confer her American citizenship upon Barack. How do we find out if the addendum is or is not retroactive?
Basically to study the wording of the actual law. Retroactive application of laws, however, is somewhat of a bugaboo. Retroactivity obviously has major collision possibilities with standing laws, but the real problem is that it undermines the stability of the legal system altogether. So - usually - a retroactive law will state explicitly that it is retroactive, and to what extent, and even why, so that a court can stand on firm ground adjudicating it. Because absent extraordinary circumstances, the substantive argument against retroactivity is simply that the statute never mentions the subject. Statutory laws are "positive" laws - if they say something it exists, if they don't say something it doesn't exist.
Look it up!!! For goodness sake, Look it up yourself, since you don’t believe common reason. I did a search for “citizenship laws 1960” you can add a “retroactive?” to that