Actually they were all junk. Even the "good ones" and they knew it. When the pool became so shitty that the rating agencies were about to start rating them as j

Actually they were all junk. Even the "good ones" and they knew it. When the pool became so shitty that the rating agencies were about to start rating them as junk they changed their rating "algorithm" at the behest of the banks. It was straight up fraud all around but the govt just didn't want to prosecute the anyone that mattered.