India, July 10 -- The Trump administration has launched a major investigation into alleged fraud involving the H-1B and PERM employment visa programs, with US Labor Department Inspector General Anthony D'Esposito saying whistleblowers have raised concerns about some of the biggest users of the system.

IT services company Cognizant was named during the announcement of the probe, though officials have not accused the company of wrongdoing or announced any charges against it. The investigation is expected to examine allegations of potential misuse of employment-based visa programs as the administration expands its fraud crackdown.

D'Esposito revealed details of the investigation ahead of Vice President JD Vance's fraud initiative event in ...