The rally has taken Treasury yields — which move opposite the bonds’ price — to their lowest levels since spring, and have helped push mortgage rates to their lowest levels in three months. The Fed’s active presence has also raised questions of whether the rally is sustainable.

Wall Street Journal, September 21, 2009

The Fed has accounted for half of all Treasury purchases in Q2 ($164 billion of total of $339 billion). Below we present data for what could be construed as a Treasury funding crisis borne out of lack of demand for longer maturities, once the QE portion of UST purchases expires. This crisis could hit as soon as October.

ZeroHedge.com, September 25, 2009