Politicians Loan preference from Country Wide

Our politicians Dodd and others received special VIP treatment from Country Wide, a company that went bankrupt and that our politicians bailed out. Why is it the Democrats are blocking an investigation into this, but they want to continually investigate people that are out of office? If a politician has done wrong, of any party, they should be investigated and thrown into jail! Why the double standard? I don't mind them spending money on investigations into Bush / Cheney, but we all know they will never get them for anything and it's a waste of money! If however they want to waste money. that's fine as long as when the shoe is on the other foot they are equally as viscious!