Treasury mum on halting mortgage-security purchases

And NMN says the Fed has about $250 billion more in MBS purchases planned (bold added):

The New York Federal Reserve Bank purchased $1.09 trillion in Fannie Mae, Freddie Mac and Ginnie Mae MBS this year, according to the Federal Housing Finance Agency. At the start of the program in early January, the New York Federal Reserve Bank was purchasing $20 billion to $25 billion in agency MBS a week. Now the Fed is purchasing agency MBS at a $16 billion weekly rate, which means it could continue at that pace for another 10 weeks.