WASHINGTON, DC - SEPTEMBER 08: U.S. Capitol Police move in to arrest United Mine Workers of America President Cecil Roberts (C) and about 100 members of the UMWA as they block traffic on Pennsylvania Avenue near the U.S. Capitol following a rally on the National Mall September 8, 2016 in Washington, DC. The union and its supporters say Congress should pass the Miners Protection Act and honor a 1947 federal government promise to provide for the pension and healthcare benefits of retired miners. (Photo by Chip Somodevilla/Getty Images)