On Monday, after reading the Post's first article about seniors losing their homes over sometimes minuscule tax bills, Gray demanded Gandhi's office impose a moratorium on lien sales and said he would offer legislation reforming the practice. The CFO's office, which is independent of the mayor's office, is refusing to impose a moratorium unless the Council passes legislation. What the mayor didn't know is that OFCO is selling $174 tax liens of 70-year-old veterans. Like most property tax-collecting municipalities, DC conducts tax lien sales as a way to collect delinquent payments. But what the Post's series uncovered was a trend of selling off low-value liens issued against elderly and sometimes ill homeowners who wind up finding themselves being tossed from their houses after a lien snowballs into a massive legal bill. "What the mayor didn't know is that OFCO is selling $174 tax liens of 70-year-old veterans," Ribeiro says, referring to one subject of the Post's investigation. The tax lien sale system has been reformed a bit in the past few years. The CFO's office no longer auctions off liens worth less than $1,000—most of the cases spotlighted by the Post date from before 2008—but Gandhi's critics are asking for a full stop for now while the entire program is reviewed. But that could be a tricky goal to reach in the short term. The CFO's office, independent of both the executive and legislative branches, is a 1,000-employee agency tasked with maximizing the District's revenue, and one city official said it can sometimes make numbers more important than the people behind those numbers. Said one city official, the CFO "is like a fourth branch of government."