Viktor and Amalija Knavs, both in their 70s, took the citizenship oath on Thursday at a private ceremony in New York City. The Slovenian immigrants, a former car dealer and textile factory worker, had been living in the US as permanent residents, abc.net.au reports.
The Knavses slipped in and out of a side entrance at a Manhattan federal building flanked by Department of Homeland Security police. Some workers inside didn't know what was going on. The couple said little, other than Viktor telling a reporter "thank you" when asked how they felt about becoming Americans.
Lawyer Michael Wildes said the Knavses applied for citizenship on their own and didn't get any special treatment. He confirmed that Ms Trump sponsored their green cards. Her husband, US President Donald Trump, has proposed ending most family-based immigration, which he refers to as "chain migration."