The Federal Reserve’s main job, as the central bank of the United States, is to conduct the nation’s monetary policy to achieve maximum employment and stable prices, which is known as the “dual mandate”.

Comment:

They failed because the US Dollar lost about 98% of its value after they took us over in 1913. And after 1971 maximum employment of wealth creating tax paying  jobs went to Europe and the rest of the world.

The USA got stuck with wealth absorbing tax absorbing jobs that Trump is trying to reverse.