Traveling or returning to the U.S. from abroad has become increasingly risky for some — even for people with valid visas and green cards. In recent weeks, international tourists, visa holders ...

About 12.8 million green card holders live in the United States, according to the latest estimates from the Office of Homeland Security Statistics. And some of them were taken by surprise when ...

Even some green card holders have faced increased scrutiny. A green card, officially known as a Permanent Resident Card, is a legal authorization to live and work in the United States permanently.