STANFORD, CA - JANUARY 19: Federal Reserve Board Chairwoman Janet Yellen discusses monetary policy and the economic outlook at Stanford University on January 19, 2017 in Stanford, California. (Photo by Elijah Nouvelage/Getty Images)
STANFORD, CA - JANUARY 19: Federal Reserve Board Chairwoman Janet Yellen discusses monetary policy and the economic outlook at Stanford University on January 19, 2017 in Stanford, California. (Photo by Elijah Nouvelage/Getty Images)