What has changed is that Trump has decided that children born to long term military personnel or life long Gov’t employees no longer are considered to be US residents, while living abroad. The parents my be US citizens but are not considered to be residing in the US even when living on a US base, or in other US territories.
What this means is that say this was in place When one John Sidney McCain was born in the US Panama canal zone…he would not automatically be considered a citizen, but would then have to go thru the process of naturalization.
Similarly 2 of my cousins would also not be considered citizens as they were deemed to not be reducing in the US.
It does apply to the children of non-citizen members of the military.
Which brings up the question, is it right to imposed extra hassle on only some of the military. They’re protecting country the same as each other. They should be treated by the country the same way.
Which re-introduces the question, what is this supposed to achieve? What problem is it solving?