Will the move to dismantle Fannie Mae and Freddie Mac mean the end of the 30-year fixed-rate mortgage as we have come to know it?

Many housing proponents say that it will. Without the government's backing, they contend that the 30-year mortgage will become a relic of a bygone era when mortgage money was cheap and easy to come by. But others say America's most popular home loan will still be available — if you can afford it.

Before digging deeper into the debate, a short primer: Although the long-term fixed-rate mortgage was born with the Federal Housing Administration — the government agency established in 1934 to help stabilize the then-shaky housing market — it was taken to its greatest heights by Fannie and Freddie, the two government-chartered institutions that were created years later to keep the money flowing for home loans.

These government-sponsored enterprises (GSEs) live and work in the secondary mortgage market, where they keep primary lenders flush with cash by buying their loans and packaging them into securities for sale to investors worldwide.

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