U.S. banks haunted by mortgage demons that won't go away

July 19 (Reuters) - Lenders like Bank of America Corp and Wells Fargo & Co say they are facing mounting pressure to buy back bad mortgages they sold to investors, signaling that banks' home-loan headaches could continue for years.

Investors like Fannie Mae and Freddie Mac have been pressing banks to buy back bad mortgages for years, but in recent months those requests have intensified, the banks have said in recent second-quarter earnings reports.

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