For years, foreign nationals married to U.S. citizens have been among the most likely to secure lawful permanent residency, often viewed as having a relatively straightforward path to a green card. Now, a series of high-profile arrests and shifting enforcement priorities are casting doubt over that assumption. Couples who once approached immigration interviews as a routine step in a lengthy but predictable process are increasingly confronting the possibility of detention and deportation instead. As legal advocates warn of a chilling effect on family-based immigration, new questions are emerging about how secure-even for spouses of Americans-the promise of a future in the United States really is.