The question is did Bain profit from the housing mkt collapse and if it did, how involved was Romney in the equation if any? It may have been legal however was it ethical? The revolving door of private to gv't and back require a beyond reproach scrutiny that is much needed. There are too many interconnecting dots that need to be scrutinized and made public. He is running for the president of the United States and this line of inquiry seems foggy at best.
Profiting from the collapse of the housing market in it of itself is not the issue but gaming the system is. Romney may be squeaky clean on this however the rats are going to look into this given their playbook.