鲍威尔：不知道美联储从资产负债表中削减抵押贷款支持证券（MBS）持有量对于住房市场成本的影响。

Core Viewpoint - The Federal Reserve Chairman Powell expressed uncertainty regarding the impact of reducing the mortgage-backed securities (MBS) holdings from the balance sheet on housing market costs [1] Group 1 - The Federal Reserve is considering the reduction of MBS holdings as part of its monetary policy adjustments [1] - Powell's comments highlight a lack of clarity on how this reduction will affect mortgage rates and housing affordability [1] - The housing market remains a critical area of focus for the Federal Reserve amid ongoing economic adjustments [1]