The Office of the National Taxpayer Advocate lamented that the tax collection agency, which now faces budget cuts in Congress, is still struggling to answer the telephones.
The Social Security numbers and personal information of thousands of people, including some lawmakers, were stolen in a hack of a D.C. health marketplace disclosed this week.
The former roommate, who pleaded guilty in 2017 and was deported, sent an affidavit to federal authorities accusing Mr. Santos of running a card-skimming operation.