Michael Gold and Grace Ashford

Mr. Santos, under scrutiny for lies about his background, is set to be sworn into Congress on Tuesday even as records, colleagues and friends divulge…

The congressman-elect told The New York Post that he had not graduated from college or worked at two major Wall Street companies, as he had…

Genealogy websites cited by The Forward suggest that Mr. Santos’s grandparents were born in Brazil, and were not “Holocaust refugees,” as he has claimed.

Democratic House leaders stopped short of calling for the resignation of Mr. Santos, a Republican, who may have misrepresented himself in his résumé.