At the time, Roland W. Burris II was subject to a $34,163 tax lien and a foreclosure proceeding on his Chicago home, the newspaper reports. The mission of the agency "includes overseeing mortgage programs for low-income home buyers and anti-foreclosure initiatives."
The revelations about the hiring of Burris' son comes amid calls for the senator to resign from the seat to which he was appointed by former Gov. Blagojevich, who was impeached and removed from office in the wake of corruption charges.
Burris has come under fire after acknowledging that he tried to raise money for the then-governor and had contact with multiple aides while being considered for the seat, contrary to his prior testimony. He maintains he did nothing wrong.
On Tuesday, fellow Illinois Sen. Dick Durbin suggested that Burris resign from the Senate.
"I told him that under the circumstances, I would resign. He said, 'I'm not going to resign. I can't force him," Durbin said.
If Sen. Burris does manage to keep his seat for the remainder of this term - and he has said he will not resign - he won't have many Senate Democrats cheering for him if and when he runs for re-election next year.
Daniel Farber is editor-in-chief of CBSNews.com.