loophole in a housing law after the iteam exposed how some s.nters were using it to extort rent from landlos buyer lost her sale the night before closing, another told us her sale went through when the renter moved back and saidhe wanted to buy the house. an attorney called this practice a 1$100 million a year industry in the district. but no more. >> happy. very happy. it goes to show when you share your story, sometime there's are others who are experiencing the same thing. >> reporter: thenc c held hearings following our series of aories. home owners realtors showed up pleading for relief. it's a tool for extortion. and it is awful. >> now, the opportunity to purchase no longer applies to single family homes. >> later in the hour, the iteam will break down a new law that changes how a where you could park in d.c. and how much money is spent to pay for water bills. >> it's interesting. you can look for all of them it investigations from this past year on our a and search investigations. >>> still ahead on news 4 today, ending the government shutdown. >> incoming house democrats say they h