Sen. Tim Johnson, (D-SD) asks the Fed chairman what would likely cause interests to rise and where he sees the biggest threat to housing. Bernanke comments that he's glad to see Congress making moves to reform Fannie Mae and Freddie Mac. Sen. Mike Crapo, (R-SD), wants to know when the Fed expects to see a wind down in QE. And Sen. Robert Menendez, (D-NJ) asks Bernanke whether he thinks it's too soon to begin easing its monetary policy. The chairman assures the Senator he intends to maintain an "accommodative" policy.