“Our life is based here, I have lived more of my life here than in El Salvador,” said Urías, 47. “It’s like living out your American Dream, and then suddenly — just like that — being told your time is up, as if to say, ‘We don’t need you anymore,’ and having someone try to cut away everything you’ve built.”

The U.S. Citizenship and Immigration Services (USCIS) is conducting a comprehensive review of old citizenship files, deploying teams of experts from its offices across the country. The campaign aims to send a list of about 100 to 200 suspicious cases to the Justice Department each month, according to sources.