Viktor and Amalija Knavs have been living in the United States as permanent residents on green cards.
They arrived and departed from a Manhattan federal building escorted by Homeland Security police.
They got no special treatment during the process, their attorney Michael Wildes said.
'The application, the process, the interview was no different from anyone else's other than the security arrangements,' Wildes said on Thursday.
'They would appreciate their privacy and we just thank everybody for their attention for this very important dialogue we're having on immigration. This is an example of it going right,' he said.