SAN FRANCISCO (AP) — Former Secretary of State John Kerry is criticizing President Donald Trump's decision to pull the United States out of the landmark Paris climate accord.
Kerry on Friday called Trump's withdrawal from the 2015 Paris deal the "single greatest act of irresponsibility of any President of the United States at any time."
Trump said the international agreement was unfair to the United States and would hurt the economy.
Kerry signed the agreement to combat climate change on behalf of the United States while serving as President Barack Obama's secretary of state.
Kerry spoke in San Francisco at the Global Climate Action Summit organized by fellow Democrat, California Gov. Jerry Brown.
His comments came a day after Trump blasted Kerry on Twitter for meeting with high-level members of the Iranian government.