See Candidate Page Joe Biden, Climate, International, South Carolina Biden in South Carolina 8/28/19 Climate change “it is the existential threat to humanity right now," says @JoeBiden, who says he would have the US re-join the Paris climate accord if he is elected as president. @GreenvilleNews @independentmail #scpol— Kirk Brown (@KirkBrown_AIM) August 28, 2019