The mortgage credit-enhancement business has been no place to be the past few years, but many observers think the market has touched bottom and is starting to come back. After hemorrhaging losses since 2008, the two biggest mortgage credit-enhancement providers – Fannie Mae and Freddie Mac – reported positive net income on their single-family guaranty businesses during the second quarter. The private mortgage insurance industry hasn’t gotten there yet. Fannie and Freddie reported...[Includes two data charts]