2008年金融崩溃以来，美联储将政策利率减只几乎为零的水平，并采取了所谓的量化宽松，即从公共和私人部门购买长期证券。
Following the 2008 financial meltdown, the US Federal Reserve cut the policy rate to almost zero and pursued so-called quantitative easing (QE), by purchasing long-term securities from the public and private sectors.