Bank of America Corp., the biggest U.S. lender by assets, should repurchase as much as $20 billion in home loans that were based on wrong or missing information, said a trade group for bond insurers. More than half of the soured home-equity credit lines and residential mortgages created from 2005 through 2007 that insurers examined should be bought back, the Association of Financial Guaranty Insurers said in a Sept. 2 letter to Bank of America Chief Executive Officer Brian T. Moynihan. Ambac Financial Group Inc. and Assured Guaranty Ltd. are members, and the group said repurchases may total $10 billion to $20 billion.