All they have to do is show they are an American citizen.
#7 | Posted by boaz
"Nichole Micheroni, who was born and raised in Massachusetts, and Carmen Bello, who is from the Dominican Republic but who has been a U.S. citizen for almost 20 years, both received a letter demanding that they leave the country. The correspondence from DHS is similar to threatening letters received by the lawyers' clients. "Do not attempt to remain in the United States " the federal government will find you" the letter adds."
Remember when Trumpers on this site used to claim that Biden was weaponizing the justice department against Santos? Many of them defended this liar and fraud just like they still do with Trump.