Those looking for answers to the cause of the current U.S. financial crisis have found a new possible answer: criminal fraud. Investigators from the FBI have begun looking into possible criminal fraud on the part of those at lending institutions such as Freddie Mac, Fannie Mae, Lehman Brothers, and AIG. Charges reportedly may be forthcoming against those who, among others, wrote fraudulent home loans to borrowers who were not able to afford them and those who have destroyed documents or otherwise attempted to alter evidence of wrongdoing.