One hallmark of the mortgage-banking crisis, robo-signing, in which banks blindly accepted legal documents without checking them for accuracy or authenticity, has led to a series of lawsuits against large banks such as Bank of America and Citigroup.

One hallmark of the mortgage-banking crisis, robo-signing, in which banks

Robo-signing was one hallmark of the mortgage-banking crisis, in which banks

Robo-signing, which was one hallmark of the mortgage-banking crisis and which banks

One hallmark of the mortgage-banking crisis was robo-signing, in which banks

One hallmark of the mortgage-banking crisis was robo-signing, and banks