CouriousGeorge

Is there a time limit for when he should apply for the waiver?

My son is a dual national Thai and US. He's 17 + living in the US. I hear that he has to register with the military and/or stay in school until he's 25 to keep his passport. Can anyone point me to more complete/accurate information for what we need to do to make sure he retains his dual nationality? Thanks!