I was mentioning however there's the loophole in the 14th amendment meant for hostile foreigners.
All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside.
Basically, the second clause "
and subject to the jurisdiction thereof" is separate to the first clause "born or naturalized in the United States". You have to have both those things being true, because it's an "and" statement. It could be legitimately argued by a constitutional lawyer that illegal immigrants aren't "subject to the jurisdiction thereof" the USA, for the sole reason that they are citizens of another nation, therefore they fall in a different jurisdiction. If you can get the Supreme Court to rule in favor of that, you can strike down birthright citizenship for children of those who are not citizens.
Anyway here's some relevant history. Basically the Supreme Court hasn't looked at this since 1898, and
never in the context of illegal immigrants. Jus Soli was determined by the Supreme Court to apply in 1898 to the children of legal non-citizen residents, so whether illegals are covered hasn't ever been seriously debated by any court, they've just been covered in a de facto sense. So someone could in fact make a Supreme Court challenge to Jus Soli for illegals, and that's not covered by legal precedent because that exact matter's never come before the Court before.
https://en.wikipedia.org/wiki/United_States_v._Wong_Kim_ArkIn 2010 and 2011, state legislators in Arizona introduced bills proposing to deny regular birth certificates to children born in Arizona whose parents cannot prove they are in the United States legally. Supporters of such legislation reportedly hope their efforts will cause the issue of birthright citizenship for U.S.-born children of illegal aliens to reach the Supreme Court, possibly resulting in a new decision narrowing or overruling Wong Kim Ark.
Basically Trump can stack the SC in a year or two, and then they push this stage legislation, forcing an SC challenge, and the 1898 ruling gets dusted off and overturned. That's their game plan, pretty much.