The complaint alleges that during the financial crisis, the bank’s home loan program defrauded the government and encumbered taxpayers by generating thousands of fraudulent or defective loans.
Bank of America itself was being bailed out by U.S. taxpayers during some of the period that the alleged fraud took place. It accepted US$45 billion in funds from October 2008 to January 2009.
Sources and more information:
http://www.therightperspective.org/2012/10/24/bank-of-america-sued-for-mortgage-fraud/
http://thehill.com/blogs/on-the-money/banking-financial-institutions/263841-us-sues-bank-of-america-for-1-billion-over-mortgage-losses