5% of US GDP (which is around $15 trillion) would be $750 billion.  10% would be 1.5 trillion.  Through all of QE a total of several trillion was spent on treasury bonds, bank bonds, mortgage backed securities, etc.  <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Quantitative_easing#US_QE1.2C_QE2.2C_and_QE3" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Quantitative_easing#US_QE1.2C_...</a><p>By your own numbers, that should have been enough, and yet you&#x27;ve complained it wasn&#x27;t.  What gives?