A horrifying threat casually uttered by Stephen Miller's wife has revealed a core new policy of the Trump administration, an analyst wrote for The Guardian Saturday.

Katie Miller, one half of a major power couple within the MAGA movement, made a threat to deport a naturalized U.S. citizen as she apparently came out on the losing side of an argument on Piers Morgan's YouTube show.

And The Guardian's Arwa Mahdawi warned that once unthinkable action seems to be fast becoming a central part of Trump administration policy.

The Miller's, she wrote, met and seemingly bonded over their shared approach to immigration policy during Donald Trump's first term. Katie Miller, then working as an immigration spokesperson, appeared to delight over the separation of immigrant families at the border — as most of the nation was repulsed by images of children in cages.

"DHS sent me to the border to see the separations for myself – to try to make me more compassionate – but it didn't work," she candidly told MSNBC's Jacob Soboroff in 2018. She even predicted her perspective wouldn't change, stating, "My family and colleagues told me that when I have kids I'll think about family separation differently. But I don't think so.

Now, with three children and Stephen serving as White House deputy chief of staff, Katie Miller has transitioned to podcasting about motherhood while maintaining her hardline political views, Mahdawi wrote.

During her appearance on Morgan's show this week, Miller erupted when confronted by commentator Cenk Uygur. "Quite frankly, I'm really sick and tired of this racist bigoted rhetoric that comes from people like you against my husband, against my family and my children," she yelled.

The confrontation escalated when Miller threatened Uygur, saying, "You better check your citizenship application and hope that everything was legal and correct."

"The bottom line is this," wrote Mahdawi. "The wife of the US homeland security adviser apparently threatened to denaturalize someone because she didn’t like the fact he criticized her."

She went on, "To be clear, Trump can’t legally take away the citizenship of someone born in the US. But as we all know by now, Trump rarely seems to look at the law as an impediment."

This incident reflects a broader trend within the MAGA movement of threatening critics with deportation or citizenship revocation. Representative Nancy Mace has even suggested deporting Representative Ilhan Omar "back to Somalia," The Guardian columnist wrote.

The Justice Department has already announced plans to prioritize efforts to strip some naturalized Americans of their citizenship, a policy that seems designed to intimidate political opponents.

The article concludes that Miller's threat was more than a personal attack, it was "a warning to everyone in America: criticize MAGA and there will be consequences."