Prime mortgages are conforming mortgages with prime borrowers, full documentation , robust credit score scores, and so forth. Mortgage-backed securities have advanced fairly a bit over the years. Thanks to elevated regulation of the financial business, MBSs are a much safer funding today than they were in the past. The U.S. Treasury stepped in with Congress to authorize a $700 billion monetary system bailout intended to ease the credit crunch. Also, the Federal Reserve purchased $4.5 trillion in MBS over a period of years while the Troubled Asset Relief Program injected capital directly into banks.