Can The Fed Ever Exit?

Can the Fed ever exit?  The short answer is no.  The ability to unwind the purchases of toxic mortgage-backed securities and US Treasury bond assets will be constrained because they would have purchased said assets at too high a price. When interest rates rise (and they will rise at some point since they can't drop much below zero), they will guarantee the negative returns of the Fed's buy high / sell low bond-purchasing monetary policies.

http://www.zerohedge.com/news/2012-10-06/can-fed-ever-exit