WASHINGTON, DC - JUNE 22: US President Barack Obama is flanked by members of Congress as he signs the HR 2576 bill during an event in the Eisenhower Executive Office Building, June 22, 2016 in Washington, DC. The bill amends the Toxic Substances Control Act (TSCA), to revise the process and requirements for evaluating and determining whether regulatory control of a chemical is warranted. (Photo by Mark Wilson/Getty Images) *** BESTPIX ***