Surrounded by a bipartisan group of United States Senators, US President Barack Obama applauds after signing H.R. 2576, the Frank R. Lautenberg Chemical Safety for the 21st Century Act in the South Court Auditorium of the White House in Washington, DC on Wednesday, June 22, 2016. The bill will establish standards for the use of certain toxic chemicals used regularly.<br />
Credit: Ron Sachs / CNP