Yellen said, “I doubt that he would even be able to say that the Fed’s goals are maximum employment and price stability.”

Mr. Trump’s comments demonstrate a “lack of understanding” about the Fed, she added.

…Asked whether she thought the president has a good grasp of economy, she said, “No, I do not.”

Janet Yellen says Trump doesn’t understand what the Federal Reserve does – CBS News

Heh, ouch.