Protesters demonstrate against the Energy Transfer Partners' Dakota Access oil pipeline near the Standing Rock Sioux reservation, in Los Angeles, California, September 13, 2016. REUTERS/Lucy Nicholson

Protesters demonstrate against the Energy Transfer Partners' Dakota Access oil pipeline near the Standing Rock Sioux reservation, in Los Angeles, California, September 13, 2016. REUTERS/Lucy Nicholson

Protesters demonstrate against the Energy Transfer Partners' Dakota Access oil pipeline near the Standing Rock Sioux reservation, in Los Angeles, California, September 13, 2016. REUTERS/Lucy Nicholson

U.S. Federal Reserve Chair Janet Yellen removes her glasses as she holds a news conference following the Fed’s two-day Federal Open Market Committee (FOMC) policy meeting in Washington June 15, 2016. REUTERS/Kevin Lamarque

U.S. Federal Reserve Chair Janet L. Yellen speaks with attendees before she addresses the World Affairs Council of Philadelphia in Philadelphia, Pennsylvania, U.S., June 6, 2016. REUTERS/Charles Mostoller

U.S. Federal Reserve Chair Janet Yellen speaks during a news conference following the two-day Federal Open Market Committee (FOMC) policy meeting in Washington, DC, U.S. on March 16, 2016. REUTERS/Kevin Lamarque/File Photo

Actress Tracee Ellis Ross, of ABC's "Black-ish," arrives at the 68th Primetime Emmy Awards in Los Angeles, California, U.S., September 18, 2016. REUTERS/Lucy Nicholson

Actress Julia Louis-Dreyfus poses backstage with her awards for Outstanding Comedy Series and Outstanding Lead Actress In A Comedy Series for her role in HBO's "Veep" at the 68th Primetime Emmy Awards in Los Angeles, California U.S., September 18, 2016. REUTERS/Mike Blake