CBS Corporation President and Chief Executive Officer Leslie Moonves poses for a portrait in his office in Studio City, California in this February 1, 2016 file photo. REUTERS/Mario Anzuoni/Files

The facade of the U.S. Federal Reserve building is reflected on wet marble during the early morning hours in Washington, July 31, 2013. REUTERS/Jonathan Ernst

CBS Corporation President and Chief Executive Officer Leslie Moonves poses for a portrait in his office in Studio City, California in this February 1, 2016 file photo. REUTERS/Mario Anzuoni/Files

Protesters take part in a march in Nantes, western France, to demonstrate against the new French labour law, September 15, 2016. REUTERS/Stephane Mahe

Masked protesters light a flare as they take part in a march in Nantes, western France, to demonstrate against the new French labour law, September 15, 2016. REUTERS/Stephane Mahe

Masked protesters clash with French riot police as they take part in a march in Nantes, western France, to demonstrate against the new French labour law, September 15, 2016. REUTERS/Stephane Mahe

Demonstrators are sprayed by a water canon during clashes with French riot police at a march in Nantes, western France, to demonstrate against the new French labour law, September 15, 2016. REUTERS/Stephane Mahe

People run away from tear gas during clashes with French riot police at a march in Nantes, western France, to demonstrate against the new French labour law, September 15, 2016. REUTERS/Stephane Mahe