By Scott Lanman and Caroline Salas Gage, Bloomberg News, November 1, 2011

Federal Reserve Chairman Ben S. Bernake can’t go it alone when it comes to reviving the U.S. housing market.

Fed policy makers, who start a two-day meeting today, are considering buying mortgage-backed securities to push down borrowing costs and help homeowners refinance their debt. That would reduce monthly payments, freeing up cash for other purchases that could spur the economy and reduce unemployment, Fed Governor Daniel Tarullo said Oct. 20.

Such an effort would save homeowners $60 billion to $80 billion a year, or about 0.5 percent of gross domestic product, so long as the Obama administration succeeds in helping homeowners through a stepped-up refinancing aid plan, said Joseph Gagnon, a former Fed economist. Should the program fail, Fed asset-buying would probably provide homeowners less than half its potential savings, said Gagnon....