Despite a late surge in refinance business for seriously underwater home mortgages, new business volume at Fannie Mae and Freddie Mac declined by 10.2 percent during the second quarter, according to a new Inside Mortgage Finance analysis and ranking. The two government-sponsored enterprises securitized a total of $273.95 billion of conventional single-family mortgages during the second quarter. Thanks to the huge $305.21 billion of GSE business recorded during the first three months of 2012, the market was still 39.3 percent ahead of the pace set during the first half of last year. Refinance activity...