The order is this:
It's been challenged by at least 22 State Attorneys General and been blocked by multiple federal judges. The SCOTUS announced on the 5th of December that they were hearing arguments for it, idk if it's been resolved yet.
Writ of Petition by Trump to allow the order: https://www.supremecourt.gov/DocketPDF/25/25-365/378052/20250926163053178_TrumpvBarbaraCertPet.pdf
Scheduled hearing by SCOTUS for oral arguments: https://www.supremecourt.gov/orders/courtorders/120525zr_hejm.pdf
A good blog about the topic is here: https://www.scotusblog.com/2025/12/supreme-court-agrees-to-hear-trumps-challenge-to-birthright-citizenship/